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Thermopsis villosa |
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| Synonym(s) |
Thermopsis caroliniana |
| Common name |
Carolina lupine, Aaron's rod |
| Family |
fabaceae |
| Life cycle |
perennial (Z3-9) |
| Flowers |
yellow (April-July) |
| Size |
4' |
| Light |
full sun-part shade |
| Cultural notes |
well-drained soil |
From seed  |
scarify seedcoat, germinate at room temperature or with bottom heat
detailed seed-starting info below
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Upright plant with attractive foliage, leaves arranged in threes. Pea-like flowers clustered as spikes on erect stalks are followed by seed pods tightly pressed against the old flower stalks. Ours flowers in early June.
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| | The leaves are oblong with rounded tips. |
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| | Bees don't say no to the large flowers |
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This plant used to grow in our garden, but it slipped away... Seed for this plant is included on my seed trade list About my plant portraits
PlantLinks to other web pages about Thermopsis villosa
Some particularly helpful links to other websites
Visitors to this page have left the following comments| Mary Anne Fink | Nov 18, 2009 | How should I care for this plant for the winter? Is is best to let it stand, or should I cut it down? Will it grow anew in spring?
The plant won't mind if you cut it down now or in early spring - and it should start pushing new growth by mid spring next year. |
| Dailahn | Apr 18, 2010 | This sounds like a good plant to put in my mini meadow. Am I right?
I would think so - as long as it doesn't get smothered by taller or more agressive plants growing around it. |
- Seed from AHS '00 distribution. Cellpack 70F (5%G, 16d). Also baggy 70F (11%G, 8d).
- Seed from '02 garden. Baggy 70F with light (several weeks) - 35F (several weeks) - 70F with light.
- Seed from '03 garden. Baggy 70F&75F (no G, 12 wks). Moved seeds to pot, set outside in mid-April. Germination started late May, continued into June, for total 25%G
- Same seed as above. Scarified hard with sandpaper, soaked 1d. Baggy 70F (25d) - 75F (55d; 68%G, 19-25d)
- Same seed as above. Scarified with sandpaper, soaked 2d. Baggy 75F (50+%G, 7-20d)
- Seed from '10 trade. Sandpapered, baggy 75F (12%G, 6-10d) - sandpapered again - (38%G, 8-17d)
- Same seed as above. Sandpapered, baggy 75F (84%G, 4-12d)
- Same seed as above. Sandpapered, baggy 75F (62%G, 7-18d). Non-germinated seeds had not swollen, would likely have responded to further scarification
- Same seeds as above. Sandpapered, baggy 70F (83%G, 10-24d)
- Seed from '15 garden. Sandpapered, baggy 70F (61%G, 16-28d)
The key to germination appears to be penetrating the seedcoat and providing adequate warmth.
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