Planting your garden with a myriad of colors can help create a beautiful, botanical picture. However, some flower colors are rarer than others. One such color of flower you might not have in your garden yet is blue. Blue is the color of tranquility, peace, and serenity. Because blue doesn’t happen very often in nature, it can be hard to find flowers that are this color.
Thankfully, through the science of flower breeding, more blue flowers are becoming available all the time. Today, there are more blue flowers than ever before. They are all ready to be planted in your garden or around your house.
There will be a lot of different blue flowers to choose from because they will be different sizes, shapes, and shade. You’ll learn about the 61 most popular blue flowers on this list, along with some basic care tips for each one. You’ll also learn some facts about what makes them so great! Let’s jump in!.
The first blue flower on our list is the azure aster. Azure aster forms branching foliage through the majority of summertime. Then, they burst into beautiful blue daisy-like flowers that will take your breath away! These flowers will bloom from late summer until the first frost of the year. You should plant them from seeds instead of picking plants from the ground, which will often kill the plant.
You can expect to grow azure asters in USDA zones 3 up to 9. They will bloom best in full sun, but they can also handle being in the shade. They do not like soil that is overly wet; dry, sandy, or rocky soil is best for them. They also enjoy soil that is a bit acidic– 5. 5 to 7. They like 5 pH soil best! This species is valued in New York because it is threatened there.
This perennial plant is easy to grow. It gets its name from the puffed-up, balloon-shaped buds it makes before it blooms into star-shaped flowers. It is planted during the spring when the weather becomes a bit warmer. This plant will bloom for the whole duration of the summertime; it is also self-seeding. Despite this, they aren’t aggressive growers. You won’t have to worry about balloon flowers getting bugs or diseases. They will come back every year with beautiful blooms that will make you smile.
For planting, you can grow your balloon flowers from seeds or from nursery plants. They may need your help with keeping them upright; staking will help especially tall plants. When it comes to sun, these plants like it when they get full sun, but they can also handle some shade, which they might need if they are in the very hot afternoon sun. This flower needs soil that is loamy and has good drainage. You should keep the plant’s soil moist, but not overwater. It grows well in USDA zones 3 through 8.
The bird-bill dayflower is another gorgeous flower with bright blue blooms. The name comes from the fact that the plant has flowers every day that open at dawn and die by noon. Bird-bill dayflowers produce three petals that are shaped a bit like mouse ears.
These plants are very hardy; many consider them to be a weed. The stems are thick and watery, and from the nodes grow new leaves and branches. They flower through the summer and early autumn. This plant will enjoy a good amount of sunlight, although they can thrive in partially shaded conditions too.
Bird-bill dayflowers are perennials; they will form tubers to come back after a year has passed. Bird-Bill Dayflowers enjoy moist soil conditions, and will also like rocky soil. They are propagated by seed, planted mid-spring if you have a greenhouse. They will work well in rock gardens, borders, and in containers, too. It has a USDA hardiness of 6 to 9.
Also called the English bluebell, this plant is a perennial that produces gorgeous blue flowers shaped like bells. They smell nice and draw in lots of pollinators, so they’re a good choice if you like having birds and butterflies in your garden.
They are usually found in shady habitats. They still like being in the sun, though, so they might do best in partly shaded spots that get lots of lovely dappled sunlight. Bluebells will grow easily in your garden if you live near a forest, but they can also live in other places. They bloom from early to late spring and the flowers fall off by midsummer.
Bluebells are easy to grow because they are hardy little plants. Pests and diseases don’t bother them much, and you can usually just let them do their thing. Bluebells enjoy moist soil conditions, provided that they are planted somewhere well-drained. They have a USDA hardiness of 4-8. It’s important to know that the whole plant is poisonous, so don’t try to eat it!
Sheep-like perennials called blue daisies grow quickly and have the classic daisy flowers we all know and love, but they are blue! The flowers are yellow in the middle. These plants are lovers of the sun, enjoying being out in the full sunshine. They are also relatively easy to grow, simply needing consistently moist soil that is still well-drained. Some people find it easier to grow them in mild weather instead of very hot or cold weather.
Blue daisies bloom from June to August, so you have the entire summer to bask in their radiance. You will be happy to know that many types of butterflies love blue daisies. So, enjoy the show when the flowers are out in the summer.
It is fairly hardy as a plant and grows well in USDA zones 9 to 15. You can start them from seeds a few days before the last frost in the spring, and they will bloom all through the summer.
Blue false indigo is a hardy perennial that grows two to five feet tall and bushy. It has purple-blue flowers. If you plant them in full shade, they will need extra support, so you might need to give them a stake they can lean on. It does enjoy full sun and partial shade as well. They are beautiful to see when planted next to fences or with other plants that go well with them because they get quite tall. They bloom throughout the springtime.
To propagate this plant, you can collect seeds from their seed pods in the late summer. However, please note that it may take a few years for the plant to flower. Blue false indigo can tolerate drought and poor quality soil. This is just a testament to how well they can grow pretty much anywhere they are planted. Trimming the foliage after blooming can help the plant maintain its rounded shape. Being very hardy, this plant grows in USDA zones 4 to 8.
Native to California, blue flax is a wildflower that only lasts a few years. In some places, it can be grown as a perennial, but not in California. This plant leans at an angle instead of growing straight up. It produces many flowers that bloom over the period of a day before wilting. They bloom through the late spring and summer.
Blue flax needs a medium amount of water and a lot of sunlight in order to flourish. For a good crop of flax, the plant sprouts itself, but you can also plant them wherever you like.
Interestingly, blue flax should be grown in soil conditions that are rocky, sandy, or otherwise poor. This is because plants can die in richer soil because they have to compete for food with plants that like that type of soil, which is most of them.
They are best suited for wilder gardens, such as those in the woodlands, versus perfectly manicured flower beds. Blue flax grows in USDA zones 4 to 9.
The most common garden color for hibiscus is yellow, but what about blue? Blue hibiscus flowers are related to mallow plants. They’re not exactly hibiscuses and they’re not perfectly blue, but we still think they’re great! This plant doesn’t get many pests or diseases, so it’s a good choice for organic gardens.
The flowers bloom several times throughout the year, through the summer and the late autumn. This plant enjoys full sun; the soil it is planted in must be medium-moisture and well-drained. Alkaline soil is best, though they fare fine in acidic soil too, with little need for fertilizer.
Blue hibiscuses are fairly low-maintenance, which is always a good thing. You will need to prune older shrubs to promote growth, though this is quite minimal. You can propagate this plant by rooting semi-ripe cuttings in the late summertime. It is important to note that this plant is pretty hardy once it is established and can handle drought if it is given enough time. It grows in USDA zones 9 to 11.
It can be called bluebeard or blue mist shrub. This shrub grows to be about 3 to 5 feet tall and has beautiful flowers that gardeners love. The flowers bloom through late summer up until the first winter frost and smell wonderfully aromatic.
The flowers are attractive to pollinators such as bees and butterflies. Once the plant has been established, it will only need occasional watering. They enjoy full sun, as they need at least 6 hours of it per day. The soil should also be well-drained.
Keep in mind that you shouldn’t prune the bush until the spring, when the leaves start to grow back. This plant is deciduous throughout most regions, though it may remain evergreen when planted in certain areas. Regardless, the shrub grows quickly and will be able to grow, in time to flower in the summertime. They thrive best in USDA zones 5 through 9.
The blue orchid has flowers that are a light blue-purple color. They are a great choice for adding a little color to your garden. You should know a bit about orchids before you try to grow them in your garden because they are picky about how they are cared for. Blue orchids will enjoy a hanging planter, so try to provide them with one.
They are native to Northeast India, Myanmar, Thailand, and Southwest China. They like warm to slightly cooler temperatures and need direct, bright sunlight. Some different varieties of blue orchid can be found in nature.
They will need water periodically throughout the spring to fall, whereas they rest during the wintertime. Try to keep their soil moist in the hottest months of the year, reducing gradually come the autumn.
Blue orchids grow best in USDA zones 9 to 11. You can opt to purchase seedlings, as these are the easiest means to grow blue orchids yourself.
The blue star is a delicate plant with pale blue flowers that look like stars. They are herbaceous perennials that look great in any garden. Blue Stars do best in average, well-drained soil that is just a little wet, but they can also handle some drought.
They do well in part shade but prefer full sun. When given full sun, they usually do not require pruning nor staking. Rich soils may make them vulnerable to drooping, which will require staking then.
These plants bloom from March through May. They grow two feet up to three feet tall. Blue stars are great for first-time gardeners as they don’t require too much attention or maintenance. You can opt to propagate by seed, as these plants germinate at a good pace. However, expect blooms to come in the second year of its life. Blue stars grow well in USDA zones 3 to 9.
The bluecrown passionflower is a vine that can grow up to 25 feet tall and spread out an extra 3 to 6 feet. It has beautiful, twining stems and bright blue flowers that stand out. Passionflower is evergreen in tropical climates and deciduous in places with cool winters. It can survive temperatures as low as 5° Fahrenheit. The blooms grow sporadically through the early summer and early fall.
Water these plants thoroughly, but fairly infrequently. Bluecrown passionflowers love the sun, but will also thrive in part-shade. To keep your plant healthy, make sure the soil drains well and it gets enough air. If not, fungi could grow on it.
It likes sandy or gravelly soil that is not too tight. If you compost too much, the plant won’t be able to flower. They can be propagated by seed or cutting. Bluecrown passionflowers grow best in USDA zones 7 to 9. They also produce interesting-looking fruits, but these aren’t particularly tasty.
The blue violet may be common, but its purple-blue blooms are uniquely spectacular. Its leaves are heart-shaped, topped with white-throated blue blossoms. They bloom through the springtime, from March to May; Blue Violets may also bloom sporadically through the summertime. Violets are also purple, but these flowers are wild, and are considered more of a weed.
They thrive best in the sun but will be amenable to partial shade as well. Blue violets love water and will need moist, but well-drained soil to be at their best. They are found commonly in southern states. It’s important to remember that they can get out of hand if left alone and can turn into weeds in some situations.
A lot of birds and butterflies come to these plants, which makes for a great show when the flowers bloom in the spring. You can use the flowers candied to decorate cakes or cookies, or even use them in teas. They do not grow very tall, usually maxing out at around 8 inches. They will grow best in USDA zones 3 to 7.
The chicory is an annual or biennial plant that has showy, blue flowers. Some people think of it as a weed, but a lot of people grow this flower because it’s so pretty. The flowers are about 1 to 1½ inches across and have 10 to 20 ray florets. Each petal has five teeth at the very end. These flowers bloom in the morning and close later in the day.
These flowers do best in full sun and most types of soil, but they like gravelly or clay-based soil the most. Chicory tolerates road salt and alkaline soils well, too.
They don’t need much water because they can survive dry conditions, but it might be best to keep the soil they are in moist. Chicory is also sometimes grown to be used in salads or teas. They grow best in USDA hardiness zones 3 to 10.
The clematis is a pretty vine that can grow blue flowers. These vines grow quickly and can be up to 20 feet long! Because they are hardy, you can find clematis plants that can do well in a small garden as well. These plants are happiest when allowed to climb. You should give them a trellis to climb onto, with some trellis wire to help them adjust.
If you plant clematis in the spring, it will have time to grow and be well-established by winter. They will need a good amount of water, especially in the early stages. Clematis plants need a spot that gets full sun for at least six hours a day. However, you must do what you can to keep their roots cool. Clematis will grow best in USDA hardiness zones 4 through 9. You may propagate them from seed, or use cuttings.
Columbines are wonderful garden perennials that can grow blue, bell-shaped flowers. They bloom from the middle of spring through the summer, giving you plenty of time to enjoy the flowers before fall. A lot of different sizes exist. Most of them grow to be 3 feet tall, but some are dwarf varieties that only get 6 inches tall.
Columbine flowers love the sun, but will also thrive in part-shade. They enjoy well-drained soil that is average in quality, and of medium moisture. Birds, bees, and butterflies will come in droves to your garden to drink the nectar from the flowers. It will be beautiful to watch!
They are easy to grow and will do well in most gardens. These plants can make their own seeds, so even though each plant only lives for about three years, you’ll never be short of them. Plant columbines in the springtime for the best effect. They grow best in USDA zones 3 through 8.
Cornflower, also known as bachelor’s button, is a beautiful annual plant that blooms a beautiful blue color in double heads that look like daisies. They grow upright, some 1 to 3 feet tall, and spread 6 to 12 inches wide. They bloom from May to July; plant them outdoors at the final spring frost.
These plants are easy to take care of and often spread their seeds, so you won’t have to do much to keep them alive. Sun is good for cornflowers, so make sure they get a lot of it. Light shade will also work for them. You can plant them in average, moderately moist, well-drained soil.
Cornflowers don’t need a lot of care when it comes to pesticides because they are pretty resistant to disease and pests. You should stake them so they have something to rest on if they get too tall. The flowers are attractive to butterflies and other pollinators. They grow best in USDA zones 2 through 11.
The desert bluebell is an attractive plant that grows best in the soils of the California deserts. If you live in or near these areas, you can enjoy this plant’s bright blue flowers. These are annual plants with cobalt blue flowers around one inch across. Bees, especially bumblebees, love them, so plant them when you can!
These flowers grow 6 to 18 inches tall, and self-propagate when well established. They love the full sun and will be able to tolerate drought nicely. They are low-maintenance plants that stay free of disease and pests. Their soil must be somewhat dry and well-drained, but still fertile; they enjoy a circumneutral pH of 6. 8-7. 2. They grow best in USDA zones 5 through 10. It’s good to note that besides bees, these flowers also attract butterflies.
The dwarf morning glory is a gorgeous, herbaceous perennial plant that grows flowers that are lavender to blue. These plants love the sun and will soak it up all day, then close up at night, just like the morning glory! They do best in organically rich, well-drained soil. They grow 1 to 3 feet tall and make a great ground cover, provided they are pruned properly.
Dwarf morning glory blooms well in the summer through fall. It can handle drought and will do well in parts of your garden that you don’t use often. They thrive most in the summer months at temperatures above 65 degrees Fahrenheit.
You can propagate them with seeds, or using softwood cuttings. Deadheading is not an issue, as these flowers tend to remove the dead blooms themselves. Pruning is a good idea to control the rate and direction in which your plants grow. These plants thrive best in USDA zones 8 through 11.
A Guide to Beautiful Blue Flowers: Names, Meanings, and Symbolism
Blue flowers are some of the rarest and most beautiful in nature Unlike warm colors like red, orange, and yellow, the color blue is associated with serenity, tranquility, and spirituality. Blue flowers can instantly brighten up any garden, bouquet or floral display
But did you know that different blue flowers also have their own special meanings and symbolism? In this article, let’s explore over 50 popular blue flowers, their names, meanings and symbolism. Read on for a guide to identifying, growing and appreciating blue blooms
Iris (Iris sibirica)This classic perennial blooms in rich shades of blue, purple and white in early to midsummer Named after the Greek goddess Iris, it symbolizes eloquence, cherished friendship and hope Its three upright petals also represent faith, valor and wisdom. Irises prefer full sun and moist soil.
Frecuency: 2
Delphinium (Delphinium)
With spike-like racemes towering on long stems, delphinium makes a dramatic statement in gardens and bouquets. It conveys dignity, grace and protection. Different shades also signify new beginnings (light blue) and boldness (dark blue). Give delphiniums full sun and rich, moist soil.
Frequency: 2
Larkspur (Consolida sp.)
This tender perennial produces upright stalks dotted with charming blue blossoms shaped like lark spurs. It signifies positivity and lightness. Double larkspur blooms mean fickleness. Grow larkspur in full sun in well-drained soil.
Hyacinth (Hyacinthus)
Highly fragrant and ideal for forcing, hyacinth blooms in vibrant shades of blue. Its tube-like clustered flowers represent sincerity, peace of mind and constancy. Hyacinths grow best in full to part sun with well-drained, fertile soil.
Grape Hyacinth (Muscari sp.)
Resembling tiny clusters of grapes, this charming spring bulb flowers in brilliant cobalt blue. It conveys childlike joy, playfulness and rebirth. Grape hyacinth thrives in full sun to partial shade in moist, well-drained soil.
Bachelor’s Button (Centaurea cyanus)
Also called cornflower, this cheery annual boasts fringed, daisy-like blooms in blue, purple and white. In addition to symbolizing prosperity and good fortune, blue bachelor’s buttons signify love, intuition and imagination. Grow in full sun in average garden soil.
Frequency: 2
Bluebell (Hyacinthoides non-scripta)
A hallmark of spring woodlands across Europe, the bluebell delights withnodding bell-shaped blooms on slender arching stems. It represents humility, gratitude and everlasting love. For optimal growth, provide rich, moist soil and partial shade.
Forget-Me-Not (Myosotis sylvatica)
This delicate-looking biennial or short-lived perennial bears clusters of 5-petaled, light blue flowers with yellow centers. It conveys true and undying love, fidelity and cherished memories. Forget-me-nots thrive in part shade in constantly moist soil.
Lobelia (Lobelia erinus)
A popular edging plant, the low-growing lobelia blooms prolifically in shades of violet-blue. Despite its beauty, it symbolizes malevolence and betrayal. Lobelias prefer part sun and moist, fertile soil. Some species are annuals, others perennials.
Morning Glory (Ipomoea)
This fast-growing annual vine produces trumpet-shaped flowers in glorious shades of blue. It represents affection, trust and rejuvenation. Provide support for climbing morning glories, along with full sun and fertile, well-drained soil.
Plumbago (Plumbago auriculata)
Also known as leadwort, this tender perennial is prized for its abundant clusters of phlox-like, light blue flowers. It conveys optimism, faithfulness and staying power. Grow plumbago in full sun in fertile soil with ample moisture.
Brunnera (Brunnera macrophylla)
With clusters of tiny blue forget-me-not-like blooms, this shade-loving perennial adds a touch of color beneath trees and shrubs. It signifies humility, tranquility and a quiet mind. Provide rich, moist soil and partial to full shade.
Balloon Flower (Platycodon grandiflorus)
This Asian native charms with puffy, balloon-like buds opening to wide starred blooms. Balloon flower represents honesty, obedience and healing. Grow in full sun to part shade in well-drained garden soil. It’s deer resistant and attracts pollinators.
Bluebeard (Caryopteris x clandonensis)
Valued for its cloud-like clusters of blue flowers in late summer, bluebeard also features silvery foliage and a bushy shape. It symbolizes ambition, personal growth and overcoming obstacles. Provide full sun and well-drained soil.
Periwinkle (Vinca minor)
A popular evergreen ground cover, periwinkle bears 5-petaled pinwheel-like flowers in various shades of blue and purple throughout summer. It represents blossoming friendships, nostalgia and longevity. Part sun, average soil and good drainage keep it thriving.
Nigella (Nigella damascena)
This decorative annual, also called love-in-a-mist, boasts unique flowers nestled in feathery foliage. Its light blue color conveys balance, fascination and a tie between good and evil. Grow nigella in full sun in average to rich well-drained soil.
Glory of the Snow (Chionodoxa luciliae)
One of the earliest bulbs to bloom, this charmer bears starry, upward-facing flowers in soft sky blue. It represents generosity, forgiveness and inner radiance in trying times. Plant glory of the snow in full sun to part shade in moist, well-drained soil.
Salvia (Salvia farinacea)
With dense spikes of small, tubular blue flowers, this ornamental sage makes a dramatic statement in borders. Its color signifies healing, longevity and respect. Salvia grows best in full sun and average to dry soil with excellent drainage.
Speedwell (Veronica sp.)
This easy-care perennial comes in blue, purple and white varieties perfect for borders and rock gardens. It conveys female energy, honesty and constancy. Speedwell thrives in full sun to light shade in moist, well-drained soil.
Frequency: 2
Anemone (Anemone coronaria)
Among the earliest flowers of spring, the poppy anemone dazzles in shades of blue, red and white. It symbolizes anticipation, protection and forsaken love. Grow anemones in full sun in rich, well-drained soil.
Wood Hyacinth (Hyacinthoides non-scripta)
With bell-like blooms on gracefully curving stems, this European native thrives in woodland settings. Its blue color denotes constancy, peace and tranquility. Plant wood hyacinths in dappled shade in moist, fertile soil.
Blue Thimble Flower (Gilia capitata)
This short-lived wildflower boasts vibrant blue flowers with white throats that resemble thimbles. It represents joy, playfulness and optimism. Give blue thimble flower full sun and well-drained garden soil. It self-sows for more blooms.
Jacob’s Ladder (Polemonium caeruleum)
With loosely branching sprays of cup-shaped blue blossoms, this perennial provides a touch of grace. It symbolizes creativity, positivity and sportsmanship. Grow Jacob’s ladder in part shade in moist, humus-rich soil.
Blue Daisy (Felicia amelloides)
Featuring yellow centers and delicate light blue rays, this South African native looks lovely in containers. It conveys friendship, intuition and new beginnings. Give blue daisy full sun and moist, well-drained soil. Deadhead spent blooms.
Blue Eyed Grass (Sisyrinchium angustifolium)
Despite its name, this charming perennial is actually in the iris family. Its delicate blue starry blooms represent wisdom, focus and protection. Part sun, average soil and good drainage keep it blooming.
In addition to their lovely color, different blue flowers also have special meanings and symbolism. When choosing blue blooms, consider their unique properties. With proper care, blue flowers can thrive indoors and out, uplifting any space with their tranquil beauty. Now you can pick the perfect blue blossoms for your garden, bouquet or arrangement.
Here are some key tips on blue flowers:
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Popular blue flowers include iris, delphinium, hyacinth, morning glory, lobelia, balloon flower and forget-me-not.
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Different blue flowers symbolize peace, serenity, sincerity, hope, intuition, and new beginnings.
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Provide most blue blooms with full sun and moist, well-drained soil for optimal growth.
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Choose blue flowers that complement your color scheme and suit your region’s growing conditions.
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Consider blue flowers’ symbolism and special properties when selecting plants for your garden.
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With proper care, blue blossoms can thrive indoors and out, instantly enhancing any space.
Frequency of Entities:
Iris: 2
Delphinium: 2
Hyacinth: 1
Grape Hyacinth: 1
Bachelor’s Button: 1
Bluebell: 1
Forget-Me-Not: 1
Lobelia: 1
Morning Glory: 1
Plumbago: 1
Brunnera: 1
Balloon Flower: 1
Bluebeard: 1
Periwinkle: 1
Nigella: 1
Glory of the Snow: 1
Salvia: 1
Speedwell: 2
Anemone: 1
Wood Hyacinth: 1
Blue Thimble Flower: 1
Jacob’s Ladder: 1
Blue Daisy: 1
Blue Eyed Grass: 1
Empire Blue Butterfly Bush
Scientific name: Buddleja davidii ‘Empire Blue’
It’s interesting that the empire blue butterfly bush grows groups of purple-blue flowers with bright orange centers. They are a treat for butterflies and hummingbirds. You can treat this plant as a perennial even though it loses its leaves in the fall. It grows back every year after being cut down to the ground. They bloom through the midsummer up until mid-fall.
The empire blue butterfly bush does not require a lot of maintenance. You can opt to prune them in the late winter after any major frosts have passed. They grow quite large at around 5 feet tall when not pruned.
Empire blue butterfly bushes need full sunlight to grow properly. Blue Butterfly Bushes enjoy both dry and moist, yet well-drained, conditions. It tolerates most weather conditions, pollution, pests, and disease very well. It also does not require any particular soil pH. Empire blue butterfly bushes grow best in USDA zones 5 to 9.
Scientific name: Campanula cochlearifolia
The bellflower family includes the cute fairy thimble. It grows low to the ground and has pretty blue flowers. They grow somewhere around 3 to 6 inches tall, spreading 1 to 2 feet across. This plant enjoys full sun, though they will also thrive well in part-shade.
They enjoy medium-quality, well-drained soil. If you grow this plant somewhere hot and dry, the flowers won’t do as well as they should.
Neutral or alkaline soil suits this plant well, as long as it is kept moderately moist. You won’t have any trouble re-sowing fairy thimbles because they self-sow and come back every year because they are perennials. They flower from late spring to mid-summer. They don’t need much care and aren’t too hard to grow, but they do do best in USDA zones 5 through 7.
Scientific name: Myosotis scorpioides
When you think of blue flowers, forget-me-nots may come to mind. However, you might be surprised to learn that they are considered a weed in some parts of the US! Before you plant them, make sure you know the rules in your area.
It goes from 6 to 12 inches tall and 9 to 12 inches wide and is a perennial herb. They enjoy full sun and part shade. They also enjoy soil that is organically rich, with good moisture. You can grow them in water no higher than 4 inches if you prefer.
Forget-me-nots are easy to take care of and look great in any garden, as long as you can keep their growth under control. You will find that they attract butterflies during their bloom period of June to August. This plant is also generally resistant to most pests. It grows best in USDA zones 5 through 9.
Scientific name: Gentiana acaulis
The gentian is a much-beloved herbaceous perennial that grows deep, true blue flowers. These plants enjoy the sun but will prefer having cooler summer conditions. It might be tricky to make sure they get enough full sun so they can flower, but not so much that their leaves get too white.
Gentian enjoys gritty soil that is full of gravel, as long as it is moist and well-drained. This plant can handle drought as long as it doesn’t happen too often. It can also handle alkaline soil pretty well.
This plant doesn’t have any major pest or disease problems, so it’s pretty easy to take care of as long as you make sure it gets enough sun. They are low-growing, standing at 4 to 6 inches. They make good ground cover because of this. Gentian’s bloom period is from May to June. They grow best in USDA zones 3 to 7.
Scientific name: Echinops
Thistle globe has sharp leaves and round flower heads that are a beautiful purple-blue color. You might find it interesting to grow thistle. That being said, this plant is great for any garden, especially those that need plants that don’t need as much care.
Spherical flowers bloom in the late summertime. To keep the plant healthy, you should cut them back a bit after they flower. This will usually bring out another set of flowers, but it’s not always the case.
Before they are fully established, globe thistles do best in moist, well-drained soil. Once they are established, they can handle drought pretty well. This plant is resistant to most pests and diseases, though they can attract aphids sometimes. These plants grow 2 to 5 feet tall and must be pruned every now and again. This plant easily self-sows, allowing it to come back each year more beautiful than ever. Globe thistles thrive in USDA zones 3 to 8.
Scientific name: Chionodoxa luciliae
Glory-of-the-snow is a pretty plant with flowers that come in through the melting snow from March to April. This is how they got their name. They are a low-growing plant, making a good ground cover at 4 to 6 inches tall. Glory-of-the-Snows spread around the same amount width-wise. They thrive best in the full sun but will enjoy partial shade, too. They will enjoy most types of soil as long as it is medium-moisture and well-drained.
The leaves on these plants fall off by the end of spring, so they don’t last long. However, they will come back the next year. There aren’t any major disease or pest problems with this plant, but nematodes can be a pain in some parts of the US. Glory-of-the-snow looks great when planted with other early spring bulbs like tulips and daffodils. They grow best in USDA zones 3 through 8.
Scientific name: Muscari
Grape hyacinths are low-growing plants with cute, tiny bell-shaped flowers that grow in groups, a lot like grapes. The flowers are light blue to purple-blue in color. Of course, grape hyacinths smell great, so if you want to enjoy their scent, plant a lot of them! They can handle winter and look great in almost any garden. Plant them in the fall and expect blooms in the mid-to-late spring the following year.
Grape hyacinths enjoy full sun, but will easily do well in shady areas, too. They love moist, well-drained soil. They are fairly tolerant of diseases and pests. Re-seeding can be avoided by pruning the plant correctly, but we know you’ll always want more of these flowers. They look great in rock gardens, formal beds, next to ponds and streams, and in planters and pots. They thrive best in USDA zones 4 through 9.
Scientific name: Lobelia siphilitica
Great lobelias are beautiful perennials that grow showy, lavender-blue flowers. Their stems grow some 2 to 3 feet in height and may need staking for extra support. It grows best in moist conditions, usually along streams or rivers. To make this happen in your garden, you will need to keep the soil around your great lobelias constantly moist. Rich soil is preferred for the best amount of nutrients. After this, they like full sun to partial shade in the north, but they’ll like shade a lot more in the south.
These plants bloom in the late summertime to mid-fall. They tolerate deer, disease, and pests very well, though not drought, as previously mentioned. Otherwise, they are fairly low maintenance. Great lobelia attracts hummingbirds and other avian friends.
It is important to know that this plant’s whole body is poisonous and will be harmful if eaten in large amounts. It grows best in USDA zones 4 through 9.
Scientific name: Gentiana saponaria
Harvestbells, otherwise known as soapwort gentian, are a perennial plant that grows bottle-shaped violet-blue flowers. These open only partially. The plant itself grows 8 to 20 inches tall. They bloom from August through October, though warmer climates may see the blooms through to November.
These flowers will need light shade to thrive, though they will not refuse full sunlight either. The soil they like best is moist and sandy, but they can live in any type of soil as long as it is moist. Acidic soil, with a pH of less than 6. 8, is their preference.
Bees that are strong enough can get into flowers that are only partially open to drink the nectar. This is how harvestbells get pollinated. It might be easier to transplant plants than to plant them from seeds, since the latter will take a very long time. As for USDA hardiness zones, harvestbells do best in zones 4 to 8.
Scientific name: Meconopsis betonicifolia
Himalayan blue poppies are absolutely beautiful flowering plants that produce gorgeous, true blue flowers. These flowers prefer partial shade and will do well in a shade garden. Because they are picky about their environment, it might be hard to get these to grow to their fullest potential.
The soil condition must be neutral to a bit acidic; it should also be moist but well-drained. It is a good idea to enrich this plant with humus to promote growth. This plant enjoys cool summer periods, and as such will not appreciate hotter conditions.
Himalayan blue poppies grow anywhere from 3 to 4 feet tall, spreading 1 to 2 feet across. They bloom from early to mid-summer. Blue Poppies are perennials, therefore it is best to cut them down to the ground after the fall. They are not resistant to pests like slugs and snails, as well as diseases like mildew. These plants grow best in USDA hardiness zones 3 through 9.
Scientific name: Hyacinthus orientalis
The hyacinth is a much-adored plant that grows flowers in a myriad of colors, including blue. This plant prefers full sun, as well as soils that are organically rich. Average pH levels are good for this plant, as long as the soil is moderately moist but well-drained. The soil should be kept moist shortly after planting to encourage the roots to grow nice and strong. They bloom for 2-3 weeks during the mid-spring, so be sure to enjoy their beauty while you can!.
Hyacinths grow 6 to 10 inches tall and spread over an area of 4 to 6 inches. They are easy to grow as long as you keep on top of their needs. They must be planted in the autumn to see blooms as early as possible. Hyacinths do well in USDA zones 4 through 8, but in zones less than 5, they need to be protected for the winter. Be sure to mulch their beds to prevent damage from the frost.
Scientific name: Hydrangea macrophylla
While most hydrangeas have white flowers, some are better known for having big groups of pretty blue flowers. A lot of the time, they get very tall, up to 10 feet! They also spread out the same amount. Hydrangeas enjoy part-shade to full shade, and will only tolerate full sun when their soil is consistently moist.
Pay attention to the pH level of the soil if you want to grow blue hydrangeas. Flowers that grow in highly acidic soil are blue, while flowers that grow in more alkaline soil are pink.
The flowers bloom through the summertime and will bloom on and off for 3 to 6 months. Hydrangeas hardly need any pruning, though you may opt to do so after they flower. These plants can also be hurt by cold, so they will need mulch around their roots to help them handle changes in temperature.
Some years they might not bloom very well because of things you can’t change. If you keep taking care of them, they will bloom their best. These plants thrive most in USDA zones 5 through 11.
Scientific name: Impatiens namchabarwensis
There are many types of impatiens flowers, but the Impatiens namchabarwensis has the most beautiful sapphire blue flowers. These flowers will need full sun, though they also do well in partial shade. Impatiens require rich, well-drained soil of even moisture.
From spring through summer, they bloom, giving you a good amount of time to enjoy their rare and lovely flowers. These plants grow to be 12 to 24 inches tall. Impatiens can be sensitive to frost, so keep them safe through the wintertime by mulching their root cover.
In many places where winters are cold, impatiens grows as an annual that spreads itself. In places where winters are milder, it grows as a perennial. Ensure you give these plants the best care you can give them, as they are quite rare. They do well in beds or containers, or almost any place you would like to enjoy them.
Scientific name: Iris versicolor
Irises are one of the most well-known flowers that bloom blue. They grow around 2 to 2. 5 feet high and spread the same amount in width. They enjoy the sun as well as part shade. People in the southern United States really like the Iris Virginica, which is also known as the “Southern Blue Flag.”
Irises prefer their soil to be medium-moist to wet. Some problems might come up in making sure they get the right amount of water. Besides keeping the soil moist, these plants aren’t particularly high maintenance. It is worth noting, though, that they are susceptible to rot and pests, so plan accordingly.
The irises’ bloom times are from May through June, though they may still flower in July and August. You may opt to grow them in wetter gardens near water features, as they enjoy the moisture. They prefer acidic soil with a pH of less than 6. 8. Irises spread by self-seeding, so expect to see a lot of these plants year after year. They thrive in USDA zones 3 to 9.
Scientific name: Delphinium
Larkspurs are a much-loved plant that grows flowers in a wide range of colors, including blue. They grow tall, from 4 to 6 feet, and spread 2 to 3 feet across. They enjoy full sun and will bloom beautifully from June through July. Larkspurs enjoy alkaline soil that is rich and fertile, with medium moisture and a lot of drainage. Even though they love the sun, it is best to give it to them when it is cooler here. Warmer climates will have them appreciating partial shade.
Since they grow so tall, you may stake them to keep them upright. Staking your larkspurs with bamboo stakes and string can really help the taller varieties grow their best. If you want to keep a good amount of moisture in the beds of your larkspurs, you will need to mulch them. Adding compost will also help bring out the best in your plants. They grow best in USDA hardiness zones 3 through 7.
Scientific name: Amorpha canescens
If you cut down the lead plant, it turns into a shrub with tiny blue to purple flowers grouped together in spikes at the ends of the stems. It grows 2 to 3 feet tall and spreads around 2 to 2. 5 feet across. They bloom from July to September. They enjoy full sun and will tolerate drought fairly well as long as they are well-established. Ensure that their soil is well-drained; with this fulfilled, they can survive well in poor and sandy soils.
Please keep in mind that this plant will not flower for a long time; they will be ready to flower after about 4 years of being established. Be sure to give them the proper care necessary if you want to see blooms in their future.
This plant doesn’t have many problems with insects, other pests, or diseases. They will do well in prairie-style gardens full of wildflowers, and are great as ground cover. As for hardiness, they thrive best in USDA zones 2 through 9.
65 Blue Flower Plant Varieties | Blue Flower types for garden | Plant and Planting
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