Goldenrod is a prolific wildflower that spreads readily by seed. While the bright yellow blooms are easy to spot waving in fields and meadows goldenrod’s seeds are tiny and tend to go unnoticed. Learning to identify these minute seeds can help you gather and sow them to grow your own goldenrod plants.
The Role of Seeds in Goldenrod Reproduction
Like all flowering plants, goldenrod relies on seeds to reproduce and colonize new areas Each flower head contains dozens of tiny seeds that develop after pollination When ripe, the seeds detach and blow away on the wind or hitch rides on passing animals.
Goldenrod’s lightweight seeds allow the plant to spread over long distances. They land in new locations and grow into new plants, expanding goldenrod’s territory. This efficient seed dispersal is one reason goldenrod is considered a prolific wildflower rather than a delicate one.
While sometimes considered a nuisance, goldenrod’s success demonstrates the amazing adaptability of seeds. Their small size and quantity enable the plant to propagate itself far and wide.
What Do Goldenrod Seeds Look Like?
Goldenrod seeds are very tiny, around 1-2 mm long or about the size of a poppy seed. They are oblong in shape and flattened, sometimes described as cigar-shaped.
Each seed starts off green but ripens to light brown or tan. At one end is a tuft of fine white hairs called a pappus. This parachute-like structure helps the seeds float on the breeze to new destinations.
Without magnification, goldenrod seeds appear as tiny specks at the base of spent flower heads. Their miniscule size allows each flower to produce dozens of them.
Up close, the seeds’ oval shape and pale color are visible. The delicate pappus is difficult to see with the naked eye. But it gives a clue to the seeds’ aerodynamic design and wind dispersal abilities.
When Do Goldenrod Seeds Form and Ripen?
Goldenrod seeds start developing after the flowers are pollinated in late summer to early fall. But they don’t fully mature and detach from the flower heads until later in fall.
Peak seed production and dispersal time is October through November in most regions. But ripe seeds can continue releasing into winter whenever the dried flower heads sway in the wind.
Check flower heads in late fall to find plump, mature seeds that are easy to harvest. By shaking the dead flowers over a collecting container, you can gather the tiny seeds.
Timing is important, since goldenrod seeds start dispersing as soon as they are ripe. Monitor the plants and collect seeds before they blow away.
How to Harvest and Store Goldenrod Seeds
To collect seeds for planting, choose flower heads that have gone completely dry and brown. Hold a bag or other container beneath the seed head, then rub the flowers between your fingers to loosen and drop the seeds.
Small paintbrushes work well for sweeping seeds into your collector. Avoid moist or moldy flower heads, as the seeds won’t be viable.
For short term storage, keep goldenrod seeds in paper envelopes or bags in a cool, dry spot. For longer storage, place them in airtight glass jars or plastic containers and refrigerate. Stored properly, the seeds can remain viable for planting for several years.
When sowing saved seeds the following season, cold stratification improves germination. Place seeds in damp peat or sand and store in the refrigerator for 4-6 weeks before planting outdoors.
Key Features to Identify Goldenrod Seeds
Here are the main identifying features of goldenrod seeds:
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Tiny size – 1 to 2 mm long, similar to a poppy seed
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Oblong, flattened shape – cigar or oval-shaped
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Pale tan or light brown color
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Tufted pappus of fine hairs at one end – aids wind dispersal
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Found in dried, spent goldenrod flower heads in fall
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Ripen October through November but disperse readily when mature
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Blow away on the wind to propagate the plant far and wide
Why Goldenrod Seeds are Important Ecologically
These tiny goldenrod seeds may go unnoticed, but they play vital ecological roles:
Food Source – Many birds and small mammals eat ripe goldenrod seeds in fall and winter when food is scarce. They are high in protein and nutrients.
Pollination – Bees, wasps, butterflies, flies, and other insects gather nectar and pollen from goldenrod’s flowers. This cross-pollination leads to seed production.
Propagation – Wind dispersal allows goldenrod seeds to spread over long distances and expand the plant’s territory.
Biodiversity – Widespread goldenrod provides food and habitat for a diverse array of wildlife across North America.
Though easy to overlook, goldenrod’s profusion of minute seeds and gift of pollen sustains many creatures. These tiny packages of life ensure goldenrod’s ongoing success across the landscape.
How to Grow Goldenrod from Seed
The best way to establish goldenrod in your own landscape is by sowing fresh seeds. Here are some tips:
- Collect seeds in fall when flower heads are fully dry and brown.
- Store seeds over winter in a cool, dry location.
- In spring, sow seeds outdoors where plants are desired.
- Press seeds gently into prepared soil and water.
- For better germination, cold stratify seeds first by refrigerating in damp peat or sand for 4-6 weeks.
- Seeds need light to germinate, so don’t cover with soil. Simply press into the ground.
- Water regularly to keep soil moist but not saturated.
- Thin seedlings to 8-12 inches apart when they reach 2-4 inches tall.
With ideal conditions, goldenrod grown from seed should bloom by the second year. Then you can enjoy its beauty and bounty of pollen and seeds to support local ecosystems.
Uses for Goldenrod Seeds
While goldenrod seeds sustain wildlife, humans can also make use of this wild resource:
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Grow goldenrod from seed as an ornamental plant, natural dye, or bee forage.
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Brew the seeds into a medicinal tea to soothe sore throats, coughs, or upset stomachs.
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Cook seeds into a hot cereal like oatmeal or mix into baked goods for extra nutrition.
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Add seeds to bird feeders or scatter them in your garden to attract birds.
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Let some of the seeds mature and disperse in your landscape to propagate more plants.
Don’t overlook the tiny treasures hidden inside spent goldenrod blooms. Gather some seeds while they are plentiful in fall and discover ways to incorporate goldenrod into your homestead habitat.
Goldenrod Seeds
FAQ
Are there any poisonous look-alikes to goldenrod?
Is goldenrod easy to grow from seed?
What does goldenrod look like when it goes to seed?