Category Archives: Plant Diseases

Lilac Powdery Mildew Treatment Reminder

If you haven’t started treating your lilacs for powdery mildew, don’t delay. Now is a good time to start with your first horticultural oil spray, with the second spray at the end of July or the beginning of August, if … Continue reading

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Cones of Death

Mulch cone of death Some horticulturists and arborists call them “mulch volcanoes”. I call them “cones of death”, since prolonged exposure to this overzealous use of mulch will eventually weaken and kill the occupant. Mulch can be a useful tool … Continue reading

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Answers to Questions You Haven’t Asked

Thanks to the magic of WordPress, I am able to see a list of the search terms used by readers coming to Gardening in the Mud. While I try my best to anticipate questions or issues in writing each post, … Continue reading

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Degree Day Update and Temperature Comparisons

For those readers living in Illinois, Indiana, Wisconsin, Michigan, or Ohio, there’s a handy degree day information site available, courtesy of Michigan State University, and supported by several turfgrass associations. All you have to do is enter your zipcode  and … Continue reading

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Powdery Mildew on Lilac

   It’s the time of year when you’re likely to notice the leaves of your lilac shrubs (Syringa) covered in a powdery, white substance known as powdery mildew. Powdery mildew on lilac is a fungus whose causal organism is Microsphaera penicullata. … Continue reading

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Tip of the Day: Lysol® is your friend

Actually, it doesn’t have to be Lysol®, but a reliable disinfectant spray should definitely be part of your gardening arsenal of tools and treatments. Pruning out infected shoots and branches has always been a useful and, yes, organic, way of eliminating … Continue reading

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