Description | Burridge’s Greenthread (Cosmidium burridgeanum) is an annual that produces an abundance of bicolored golden yellow flowers with a chocolate center among fine foliage. |
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Plant Type | Annuals |
Sunlight | full, part sun, mostly sunny |
Moisture | average |
Soil & Site | average |
Flowers | yellow blooms with mahogany to chocolate centers, a prolific bloomer |
Leaves | Fine feathery foliage. |
Dimensions | 12 inches |
Maintenance | Not totally self-supported, I needed to stake mine, flowers in flushes so dead heading helps improve plants appearance and flower production, I dead headed by grabbing a bunch of the thin spent flower stems and snipping them all at once, individual flower dead heading is laborious |
Propagation | easy from seeds |
Native Site | A half-hardy annual native to Texas. |
Misc Facts | Cosmidium has been grown in English gardens since the nineteenth century. |
Author's Notes | I grew this from a package of seeds I bought from a local garden center. I liked the flowers, but they had floppy stems, which was annoying. The flowers seem to come in flushes, creating some extra work. This is a very hard plant to find information on. |
Notes & Reference | #274-Site Authors' observations and growing experiences of Burridge’s Greenthread (Cosmidium burridgeanum) |