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Thelesperma burridgeanum

 
Thelesperma burridgeanum

Burridge's greenthread

Synonym(s) Cosmidium burridgeanum
Common name Burridge's greenthread
Family asteraceae
Life cycle annual
Flowers gold/brown (summer)
Size 18"
Light sun
From seed germinate at room temperature. exposure to light is probably helpful.
detailed seed-starting info below
Seed ripensmid-July

Ah, I like these! First time to try this year. The flowers are similar to coreopsis, golden with a chocolate center, while the leaves are very narrow, almost grassy. The photos here are our first impression, young plants in early June, when we gardened in Pennsylvania.
Later, having moved to Texas, I grew seeds from a society seed exchange labeled Thelesperma filifolium, but their coloration was consistent with this species (filifolium is all yellow), so I think they must have been mislabeled. They were nice in Texas too, but never gained much bulk, disappearing when summer's brutal heat arrived.

Thelesperma burridgeanum
A Texas-grown one

This plant used to grow in our garden, but it slipped away...

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Seed-starting details for this plant

  1. Seed from T&M '04, via trade. Baggy 70F with light (84%G, 6-11d)
  2. Seed from '05 garden. Baggy 70F with light (92%G, 4-9d)
  3. Seed from '06 garden. Baggy 70F with light (87%G, 5-10d)
  4. Seed from NARGS '22/'23 exchange. Baggy 70F (91%G, 6d)
  5. Same seed as above. Baggy 70F (92%G, 4-7d)


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Last modified: August 18, 2024
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