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More callous


While the topic of callous is being discussed I'd like to throw in 
another question.  How do you get a softwood cutting to stop producing 
callous tissue and start putting out roots?  I grew some French hybrid 
lilacs this summer, some of which rooted well, some moderately well, and 
some very poorly.  In some of the poorer ones the cuttings had large 
amounts of callous but no root.  It appeared that if roots did not form 
in the early stages of callousing then they never formed at all.  Does 
anyone know what induces rooting as opposed to callousing?

Dean Arndt
Manitoba, Canada
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