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Questions, Answers and Comments by Category
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Initial post
9 SEP 21
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* This post deleted by user *
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Reply
#1 of 6 posted
9 SEP 21 by
 HubertG
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Some types of mulches, especially barks, draw nitrogen from the surrounding soil when they break down, so the nitrogen goes to the mulch rather than to the roses. Also, sometimes mulches when applied too thickly can prevent moisture penetration into the soil rather than conserve soil moisture.
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This makes sense, and explains how this began happening soon after we mulched! Thank you so much, will look carefully at the type of mulch I’m buying.
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This makes sense, and explains how this began happening soon after we mulched! Thank you so much, will look carefully at the type of mulch I’m buying.
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I'll just point out that I put down mulch when the plants are dormant late fall or winter. Also I use wood chips that take longer to break down so last several years and enrich the soil.
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Reply
#2 of 6 posted
10 SEP 21 by
Lee H.
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My personal experience is when leaves start to yellow and drop: start looking for mites.
I have on one occasion experienced trouble with mulch. It was a Scott product with a weed inhibitor. Killed a nice dogwood with it.
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Thanks I’ll check for mites too, never had an issue with mites but not discounting the possibility this time around. It’s so strange how they dropped on every bush almost simultaneously. Thanks for your input ‘
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You might like to take a look at RESOURCES / GLOSSARY / DOWNY MILDEW. Sudden leaf drop is mentioned there.
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