There are many different diseases that attack roses in Mississippi. These will vary in type and severity depending upon location and weather conditions. Die-back and stem canker are really a complex o

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

By Randy Drinkard - Posted on 16 July 2009 Several fungi are capable of causing stem canker and dieback of roses. Cankers begin as spots ranging in color from yellow to purple, depending on the

Paul Shirville, Photo By: Irene Hannestad I saw several lesions that had dried up and looked hollow. Above the lesion there was strong new growth. How do you get canker and what can you do about it