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Coreopsis 'Limerock Ruby' overwinter

Message from Kathy C

In forum: Coreopsis 'Limerock Ruby'

Hi, CD,
I have had a long love affair with Coreopsis verticillata and have had the opportunity to grow them in two countries - on the east coast of the US (in New Jersey) and, more recently, my garden in London. The winters in NJ are much colder than those in London and I never once mulched my Coreopsis. Winters there are somewhat wet, but London winters are wetter. I did see that the Coreopsis in London, though they survived wet winters, didn't like them and were sparse and slow to recover after particularly wet ones. I never used a plastic collar so not sure what to advise for that. What I did do that worked well was add grit or gravel to the base of the plant about 10cm thick and then worked it into the soil. This helped drainage. Also, if they are planted in a spot that gets pretty wet in winter, you can plant them on a slight mound. Let me know what you decide to do and how the plants fair over the winter.
Kathy C.

  • Posted: Tue. 29th September 2009 19:25