[NAFEX] Allelopathic Sunflowers?

Doreen Howard gardendiva at charter.net
Thu May 19 21:08:10 EDT 2005

Dylan Ford wrote:
  If my memory serves (which is ever less likely), it is a substance
> in sunflower seed hulls that suppress the growth of some plants. Or so 
> I've
> heard.

Yes, the hulls are allelopathic, but the plant roots also secrete a hormone 
that is allelopathic, especially for weeds.  That's a good thing.  But, my 
concern is that if I grow sunflowers in ground I will ultimately use for 
more dwarf fruit trees, will I create problems for the trees.

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