Rubenza Cosmos


Rubenza Cosmos

Cosmos bipinnatus
(75-90 days) A delicate cosmos in rich hues ranging from burgundy to deep amber rose. The 2¼–3¼" flowers contrast nicely with bright green foliage. Grows 3–4' tall—trellising will prevent them from tipping over in wind and rain. NEW!

5030 Rubenza
Item Discounted
A: 0.2g for $2.75  
sold out
B: 0.6g for $3.50  
sold out
C: 3g for $5.50  
sold out
D: 12g for $12.00  
sold out

Additional Information


~125-150 seeds/g.

Annual. Sun-loving, free-flowering all summer, can serve as an accent, screen or cutflower. Colorful daisy-style flowers with yellow centers bloom amidst lacy cut foliage. Attracts a broad range of beneficial insects.

Culture: For best results, thin its fast-growing large plants. Deadhead for persistent blooms. Harvest cutflowers when petals on first flower are just opening. Don’t wait too long! Old blooms don’t last. Vase life is 4–6 days. Light aids germination. May be started indoors at 70–75° (grow on at 60–65°) or direct seeded after last frost. Space 9–12". Tolerant of drought.


All flowers are open-pollinated except where noted.

Days in parentheses after a variety indicate days to first bloom.

Germination Testing

For the latest results of our germination tests, please see the germination page.

Our Seeds are Non-GMO


All of our seeds are non-GMO, and free of neonicotinoids and fungicides. Fedco is one of the original companies to sign the Safe Seed Pledge.