Rose Cankers
CAUSAL ORGANISM: Coniothyrium spp.
After a long cold wet winter, roses can be expected to have some dead and cankered canes. While these pathogenic fungi are not very sophisticated, they can cause considerable damage. The problems can be especially acute on old established roses that have lost some vigor and on young bare root roses emerging from cold storage.
Copyright© 1995-2002 by Baldo Villegas
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