General Plant Information (Edit)
| Plant Habit: |
Herb/Forb
|
| Life cycle: |
Perennial
|
| Sun Requirements: |
Full Sun to Partial Shade
Partial or Dappled Shade
Partial Shade to Full Shade
|
| Minimum cold hardiness: |
Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
|
| Maximum recommended zone: |
Zone 9a
|
| Plant Height: |
36 - 60 inches |
| Plant Spread: |
12 - 18 inches |
| Leaves: |
Fragrant
|
| Fruit: |
Edible to birds
|
| Flowers: |
Showy
|
| Flower Color: |
Yellow
|
| Bloom Size: |
1"-2"
|
| Flower Time: |
Late summer or early fall
Fall
|
| Underground structures: |
Rhizome
|
| Edible Parts: |
Fruit
|
- Rough Sunflower
- Hairy Sunflower
- Bristly Sunflower
Posted by
ILPARW (southeast Pennsylvania - Zone 6b) on Sep 2, 2023 10:39 AM concerning plant:
This Rough or Hairy or Stiff-Haired Sunflower is native from New York & Connecticut down into Florida to Texas up to Nebraska and Minnesota and a little into southern Canada there. The stems are light green to purple and covered with hairs. The narrowly lanceolate to ovate leaves are rough on top from stiff hairs and pubescent below. The flowers are about 2 to 3 inches in diameter with 10 to 15 yellow ray flowers, that look like petals. The center disc flowers are yellowish. The root system is fibrous and produces long rhizomes (underground stems). In a garden it can be aggressive by spreading by rhizomes.
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