Plant spacing is based on the ultimate width of the plants. This figure is normally given as a range; for example, 3-5’. If you live somewhere cold or want plants to grow faster, space them out at the shorter end of the range. If you live somewhere warm, don’t have a lot of money, or don’t mind waiting longer for plants to touch, use the higher end of the range. Using the larger number is recommended when calculating distance from a building or structure. The only thing that really matters is that you don’t want your plants to touch. You can put them as far apart as you want. All plant spacing is based on the plant’s center, which means that the plants’ centers are set back half of their width:
You can plant your plants in a straight line if you’re making hedges or edging, but if you want a more natural look, space your plants in a staggered or zigzag pattern:
The full grown White Pillar Rose of Sharon is truly a sight to behold in any garden. This unique variety of hardy Hibiscus syriacus packs a visual punch thanks to its towering yet narrow stature and bountiful blooms.
White Pillar Rose of Sharon is part of the brand new series of columnar Rose of Sharon shrubs bred by Proven Winners. This variety sprouts pure white, semi-double blooms from summer through fall. Its flowers contrast elegantly against the green foliage.
Unlike conventional Rose of Sharon that tend to grow as wide spreading shrubs, White Pillar has an upright, narrow habit. It reaches a mature height of 10-16 feet but only spreads to 4-5 feet wide.
This unusual growth habit makes White Pillar perfect for tight spaces and provides creative new ways to utilize it in garden designs A few ideas are planting it
- Alongside an entrance or front walkway
- As a tall privacy screen or living fence
- In containers as a thriller plant
- As a bold specimen shrub
Growing Conditions for White Pillar Rose of Sharon
White Pillar thrives in zones 5-9. It is cold hardy even through frigid winters.
This is a full sun lover that needs at least 6 hours of direct sunlight daily. Areas that receive morning sun and afternoon shade also work well. Too much shade will result in poor flowering and leggy growth.
The soil should be fertile and well-draining. Amend clay soils with compost or other organic material to improve drainage.
These shrubs are quite drought tolerant once established However, regular watering when young and during the first year will help them establish a healthy root system quickly.
The Impressive Size of Full Grown White Pillar Rose of Sharon
When grown in ideal conditions, the White Pillar Rose of Sharon reaches its maximum height of 16 feet at maturity. It takes about 5-8 years to achieve its full towering height.
These fast growing shrubs can gain over 2 feet in height each year when they are young. The growth rate slows down as they reach their mature stature.
In terms of width, White Pillar has a distinct narrow habit unlike regular Rose of Sharon. It only spreads to 4-5 feet wide at its base when full grown.
The columnar shape is maintained without pruning. As the shrubs age, some lateral branches may emerge but regular pruning isn’t required to keep the narrow form.
Abundant Flowers from Top to Bottom
One of the best qualities of White Pillar is that it blooms abundantly from top to bottom when mature. The flowers completely cover the shrub.
The blooms appear on new wood or the current season’s growth. So even after a harsh winter, the shrub will flower prolifically again in summer. Deadheading spent blooms can encourage reblooming.
Each flower is about 3-4 inches wide. They have delicate white petals with a central collar of yellow stamens ringed by pale purple. The flowers are semi-double, meaning they have extra rows of petals.
Low Maintenance Care of White Pillar Rose of Sharon
Full grown White Pillar Rose of Sharon are easy to care for with minimal maintenance needed. Follow these tips for best results:
- Pruning is rarely required thanks to the naturally narrow habit. If needed, prune in early spring before growth resumes. Never prune in fall.
- Apply a 2-3 inch layer of mulch around the base to retain moisture and reduce weeds. Replenish as needed.
- Fertilize in early spring with a balanced fertilizer or one formulated for roses. Fertilizing again mid-summer is optional.
- Water regularly when newly planted and during the first year. Mature shrubs only need weekly watering during droughts.
- White Pillar is pest and disease resistant. Inspect regularly for potential problems and treat accordingly.
Common Problems with White Pillar Rose of Sharon
When provided proper growing conditions, the White Pillar Rose of Sharon will thrive with minimal issues. But here are a few potential problems to look out for:
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Leaf spot diseases – Fungal leaf spots caused by diseases like Cercospora and Entomosporium can occur, especially in humid climates. Good air circulation and preventive fungicide applications help reduce disease. Remove and destroy infected foliage.
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Powdery mildew – This fungal disease coats leaves with white powdery growth. It thrives in crowded, shady, and humid conditions. Improve air circulation and sunlight exposure. Use neem oil or sulfur sprays as prevention.
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Aphids – These tiny sucking insects can cluster on new growth and distort leaves. Knock them off with a strong spray of water. Insecticidal soap or neem oil also help with control.
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Mites – Spider mites cause stippling damage on leaves when they feed. Their populations can explode in hot, dry conditions. Apply insecticidal soap or horticultural oils to control heavy infestations.
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Branches falling over – Excessively wet soil and strong winds can cause branches to fall over and not recover upright form. Improve drainage. Stake large shrubs when newly planted to provide support while establishing.
Designing With White Pillar Rose of Sharon
The columnar yet substantial size of White Pillar Rose of Sharon makes it a great structural plant in garden designs. Here are some ideas on how to showcase it:
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Use a pair to flank an entryway. The eye-catching height draws attention to the front door.
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Plant one as a living screen for privacy or to hide an eyesore. The narrow width takes up less space than most hedge plants.
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Grow in a row spaced 8-10 feet apart to create a tall, modern hedge. Looks striking with evergreen shrubs in front.
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Underplant with lower growing shrubs, perennials, and annuals. This showcases White Pillar as a focal point.
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Mix one into a perennial border for vertical interest and summer color. Partner with purple and blue flowers for contrast.
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Grow in containers on the patio, deck, or poolside for a touch of drama. White Pillar also grows well in a whiskey barrel planter.
Enjoying the Full Grown White Pillar Rose of Sharon
With its imposing height yet condensed width, the mature White Pillar Rose of Sharon makes a spectacular addition to landscapes. It’s adaptable, low maintenance, and delivers seasonal interest.
If you have the space, make White Pillar the superstar of your garden. You’ll reap the rewards of its majestic presence for years to come.
More Information Description Think you don’t have room for a rose of Sharon? Think again! Meet White Pillar® (Hibiscus syriacus), the sister plant to Purple Pillar®. This unique hibiscus naturally grows upwards in a column making it easy to fit in just about any narrow space-no pruning needed! Growing only 2-3′ wide, this rose of Sharon is a space-saver! Its tall stems are packed with white semi-double flowers that bloom continuously from summer-fall. Deer resistant, drought-tolerant, space-saving, and incredibly easy to care for, White Pillar® has unlimited garden potential.Try creating a narrow hedge, or plant around an entryway; it even makes a stunning accent plant in your perennial garden. Plant in a sunny place and watch this plant shine! Details
Learn how to grow rose of Sharon in pots, when to fertilize them, and which ones are sterile. Find out everything you need to know to grow rose of Sharon like a pro.
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Not sure how many plants will fit in your garden? Our calculator will tell you exactly how many plants you need. Area Foot Length.
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- Unusual columnar habit saves space and creates vertical impact!
- Loved by pollinators.
- White blooms from mid-summer until frost!
- Resistant to deer and drought.
- Zones 5-9, sun, 16 tall x 3 wide at maturity.
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Plant spacing is based on the ultimate width of the plants. This figure is normally given as a range; for example, 3-5’. If you live somewhere cold or want plants to grow faster, space them out at the shorter end of the range. If you live somewhere warm, don’t have a lot of money, or don’t mind waiting longer for plants to touch, use the higher end of the range. Using the larger number is recommended when calculating distance from a building or structure. The only thing that really matters is that you don’t want your plants to touch. You can put them as far apart as you want. All plant spacing is based on the plant’s center, which means that the plants’ centers are set back half of their width:
You can plant your plants in a straight line if you’re making hedges or edging, but if you want a more natural look, space your plants in a staggered or zigzag pattern:
Hand-picked at our greenhouse
Shipped to your door
Arrives as young plant
Planting a Rose of Sharon that Gets SUPER Tall! // Garden Answer
FAQ
How tall does Pillar rose of Sharon grow?
How do you care for a rose of Sharon White Pillar?
How long does it take rose of Sharon to grow full size?
Do rose of Sharon like sun or shade?
What is a white pillar rose of Sharon?
A new color for this unique rose of Sharon series! White Pillar ® rose of Sharon is a sister plant to Purple Pillar ®, the plant that changed how you think about rose of Sharon. Both naturally grow as a narrow column, so it takes up just a fraction of the space that conventional roses of Sharon do.
How big does a white pillar rose of Sharon grow?
It comes with a generous blooms season that begins in the summer and lasts throughout the fall. The White Pillar Rose of Sharon grows to be 120” to 192” inches tall with a spread of 24”-36” inches. Consider planting this Rose of Sharon as a border plant, for screening, privacy purposes, or as a thriller in containers.
How do you care for white pillar rose of Sharon?
Providing a layer of 2”-3” inches of bark mulch is desirable for protecting the roots. Fertilize with granular fertilizer for woody plants in the spring after the ground thaws out. Pruning White Pillar Rose of Sharon is rarely needed, but if desired prune in early spring. Trim dead or damaged branches and leaves anytime of the year.
When should I prune white pillar rose of Sharon?
Pruning White Pillar Rose of Sharon is rarely needed, but if desired prune in early spring. Trim dead or damaged branches and leaves anytime of the year. To increase the amount of blooms, you can deadhead (pick off) the spent blooms to make room for new blooms.