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Category Archives: Plant Diseases
Lilac Blights
A long rainy spring, such as many of us experienced this year, creates the perfect conditions for lilac blight. There are two types of lilac blights, a fungal variety, Ascochyta syringae, and a bacterial variety, Pseudomonas syringae p.v. syringae (the … Continue reading
Posted in Plant Diseases
Tagged ascochyta clematidina, ascochyta syringae, bacterial blight, clematis wilt, fungal leaf spot, Leonard Perry, lilacs, phoma clematidina, pseudomonas syringae p.v. syringae
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Alternaria Leaf Spot Fungus on Aster ‘Purple Dome’
Regrettably, I can no longer recommend Aster (syn. Symphyotrichum) novae-angliae ‘Purple Dome’ due to its susceptibility to Alternaria leaf spot. Alternaria is a fungal leaf spot disease that can affect trees, as well as perennials. Although often not serious on … Continue reading
Posted in Plant Diseases
Tagged alternaria leaf spot, aster 'purple dome', symphyotrichum novae-angliae 'purple dome'
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A Note on Powdery Mildew and Disease Management
“Powdery Mildew on Lilacs” continues to be one of the most read articles on Gardening in the Mud. However, anyone located in Zones 5 and 6 hoping to treat powdery mildew at this time of year has only one control … Continue reading
Posted in Plant Diseases
Tagged avoidance, eradication, exlusion, lilacs, powdery mildew, principles of disease management, protection
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Plant of the Month: Asiatic Hybrid Lilies
In between early summer and high summer, among the best perennials to join June-blooming roses are the Asiatic hybrid lilies. Stately and strong, they provide a welcome linear accent in the garden. The multitude of colors and patterns makes it … Continue reading
Posted in Basics, Garden Design, Insects, Plant Diseases, Plant of the Month
Tagged Asiatic Hybrid Lilies, B&D Lilies, Botrytis Blight, Connecticut King, dividing lilies, Fusarium oxysporum, John Scheeper, LA lilies, Longiflorum-Asiatic Lilies, Red Lily Beetle, transplanting lilies
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Plant Viruses
Roses aren’t the only plants that suffer from viruses. Here are two photos from the Wisconsin Pest Bulletin showing viruses that were found on nursery stock in Wisconsin. Both photos show examples of Tobacco Rattle Virus. The virus on the Dicentra … Continue reading
Posted in Plant Diseases
Tagged Dicentra, Epimedium rubrum, Tobacco Rattle Virus
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