Deadheading Cosmos - Knowledgebase Question

Shaw afb, SC
Question by katheryn0
June 25, 1998
I have Imperial pink, Pied Piper, and Lemon Twist cosmos growing in my garden. The more I deadhead them
the shorter the plants get. If I let them go, will they stop blooming?


Image
Answer from NGA
June 25, 1998

0

Removing the spent blooms from cosmos will encourage the development of additional blooms. If you leave the flowers on the plant, most of the energy will go into developing seeds instead of producing more flowers. Keep those spent flowers cut off and your cosmos will continue to grow and set new flowers all summer and into the fall months.

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