North American Fruit Explorers mailing list at ibiblio

["Doreen Howard" <gardendiva@charter.net>]

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.
Doreen