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Re: Chocolate Cosmos


Here in the UK, all the chocolate cosmos are the same clone and none 
has ever been known to set seed - it must be self-sterile. Here it is 
propagated by tissue culture for sale as a patio plant in garden 
centres.

The chocolate cosmos is extinct in the wild (South America) and the 
botanists at Kew Gardens have put out a call asking for news of anyone 
who has a plant which does set seed. I'm interested to hear too, and 
am in touch with the appropriate people at Kew, so if anyone has such 
a plant get in touch with me.

Here, in zone 8, it is only hardy in well drained soil in front of 
sunny walls so why it dies out in warmer zones is a mystery - although 
it may not appear above ground until June.

Graham Rice
graham@groll.demon.co.uk


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