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Name: David H.
Status: other
Age: 50s
Location: N/A
Country: N/A
Date: Saturday, July 06, 2002
Question:
Can using a hardwood mulch cause damage to pot grown hybrid rose bushes? The concern is the chemical "Juglone" which may be present from certain hardwood trees.

Replies:
As long as the hardwood mulch does not come from black walnut trees (the source of juglone), then it should not cause a problem.

Possibly helpful:

http://www.urban-forestry.com/citytrees/v34n5a03.html

http://www.wvu.edu/~agexten/hortcult/fruits/blkwalnt.htm

Anthony R. Brach, Ph.D.


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