Thinning bed of day lilies - Knowledgebase Question

St. Louis, Mi
Question by lkgoering
April 20, 2010
I have a bed of day lilies that have not been divided in several years. Can these be thinned this spring without digging up and separating the plants? What's the best way to go about this?

Answer from NGA
April 20, 2010


When plants become overcrowded they can slow or stop flowering. The best approach is to dig the plants and divide them, replanting only the healthiest. Simply cutting off the tops of some of the plants won't really accomplish the same thing because the roots of the plants will still be taking up space in the ground and will still be competing for moisture and nutrients with the rest of the plants. I know it sounds like a lot of work, but digging and dividing the plants is the best approach.

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