Cosmos are avid bloomers, producing masses of flowers in a single season. To keep them blooming all summer long, though, you’ll need to know how to deadhead cosmos. Learning how to grow cosmos is ...

As one of the flowering plants you should deadhead, cosmos respond very well to the removal of spent flowers. Deadheading in the garden isn't about letting your plants listen to the Grateful Dead.

It's easy to see why gardeners love cosmos. These delightful flowers burst with cheerful blooms in vibrant shades, from white to purple to pink. They're perfect in a meadow or English cottage garden, ...