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Be on the lookout for black root rot and powdery mildew diseases
Diseases remain a concern for greenhouse crops. There is an archive of information on the eGRO website with information on disease management, as well as other horticultural plant care issues. Last week, we sent out a eGRO Alert on black root rot, and I received quite a few comments that this disease was seen in bedding plants across the country. I am reposting the link to the Alert here: https://www.e-gro.org/pdf/2025-14-04.pdfAnother disease, powdery mildew, is also present in many greenhouses on bedding, succulent, and herb plants. Last spring, I wrote an eGRO Alert on powdery mildew on rosemary management that is still relevant today. Here is the link to this Alert: https://www.e-gro.org/pdf/E902.pdf
About the Author:
Jean is an Associate Professor, Extension Plant Pathologist, and Director of the the Extension Plant Diagnostic Lab at the University of Wyoming beginning in 2025. Jean was previously at the University of Georgia for 29 years as an Extension Plant Pathologist providing plant disease diagnosis and management recommendations for ornamental plants in greenhouses, nurseries, and landscapes. She brings over 29 years of experience in working with ornamental plant producers and extension outreach providing education programs and on-site plant problem diagnostics.
Jean Williams-Woodward
Associate Professor and Extension Plant Pathologist, University of WyomingJean is an Associate Professor, Extension Plant Pathologist, and Director of the the Extension Plant Diagnostic Lab at the University of Wyoming beginning in 2025. Jean was previously at the University of Georgia for 29 years as an Extension Plant Pathologist providing plant disease diagnosis and management recommendations for ornamental plants in greenhouses, nurseries, and landscapes. She brings over 29 years of experience in working with ornamental plant producers and extension outreach providing education programs and on-site plant problem diagnostics.