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How do I get rid of morning glory?
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The true answer is: you don't. But you can slow it down and manage it. When temperatures are cool enough (80 daytime max), and bindweed is in the lawn, you can spray it with an herbicide containing 2,4-D. You cannot spray these weedkillers while temperatures reach above 80 for one or two days after spraying, because the chemical will volatilize and float over to nearby plants and damage them. In areas where there isn't any other desired plants, you can spray bindweed with a broad spectrum herbicide containing glyphosate (like Roundup).http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7462.html
Bindweed is really loving our hot weather, because our Kentucky bluegrass is heat stressed and not competing well. A vigorous, healthy lawn can usually out-compete bindweed. Three to four inches of mulch over soil will keep bindweed under control, too.
Here's a link to more information about field bindweed:
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