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2024 Seed Catalog

Brunette Cosmidium seeds
Best Seller



Cos­midium Seeds

a.k.a. Greenthread

Thelesperma burridgeanum syn. Cosmidium burridgeanum

A care-free favorite since the 19th century, Brunette cosmidium produces abundant, striking flowers ringed in golden-yellow with contrasting chocolate centers. Airy, fernlike foliage. Reaches 18-24 in. tall and blooms from June until October.

100 seeds - $3.49

Growing Bru­nette Cosmidium Seeds

Bee introduces how to plant

Direct sow into prepared seedbeds that have been cleared of weeds and had the top 1 in. of the soil loosened. Rake seed in. Press into soil by walking over the area. Keep moist until germination. Can be started indoors in cell packs or flats.

Shipping Information

U.S. Shipping Rates

Free shipping on U.S. orders over $60.00.
Free priority shipping on U.S. orders over $150.00.

Standard U.S. shipping is $5.99.
Priority U.S. shipping is $9.99.

International Shipping Rates

Shipping to Canada is $13.99.
International shipping to all other countries is $15.99.

Satisfaction Guarantee

We guarantee all the seeds we sell for one full year from the date of purchase. If you are unsatisfied with any seeds purchased from Swallowtail Garden Seeds, we will issue a refund. For customers in the U.S., we can send one-time replacements or issue a refund.

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