Cold Winters |
Mild Winters |
Sun/Shade |
Sow Seeds |
Days to Germinate |
Mature Height |
---|---|---|---|---|---|
May - June |
April - June |
Full sun |
1 - 2 inches apart |
7 - 10 days |
3 - 4 feet |
Summer/fall bloom
Frost tender
Sow seeds 1/2 inch deep, 1 to 2 inches apart in a sunny location in well-worked garden soil once danger of frost is past. Keep seed bed evenly moist; seedlings emerge in 7 to 10 days. Thin established seedlings to a final spacing of 8 inches apart, so plants have room to mature. Keep well weeded and watered while plants are young; mature cosmos can handle hot and dry conditions, but bloom longest if regularly watered.
Sow seeds 1 inch apart in a container of seed starting mix, 4 to 6 weeks before last expected frost. Cover 1/2 inch deep, keep moist and provide a good light source until ready to go outside. Plant outdoors 8 inches apart once weather warms up, after gradually acclimating seedlings to outdoor conditions.
These free-flowering, long blooming summer flowers produce reliably in all soil types to fill the garden with abundant blossoms. Sow several times through June for a succession of fresh flowers. Cutting stems of flowers regularly actually prolongs the blooming season. Stunning Rose Bon Bon makes beautiful and long-lasting bouquets and pairs easily with other garden flowers.
Check out our huge selection of Roses! All roses are safely packaged and can be delivered Canada-wide. Get them while supplies last!
Add some vertical color to your garden this summer with some Clematis and Trumpet vines from our vines collection! Get yours quick before they're gone!
Fall planting bulbs are now available for pre-ordering. See all the new 2022 varieties available and secure your favourites before they're sold out!
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Each week we hand pick the best deals and discounts just for you! Find out about our informative workshops and seminars before anyone else and receive tips, trends, and our latest blog posts.
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