|If I spray a weed killer on soil prior to planting (say late winter), will it stunt the growth or otherwise harm any plants I plant in early spring?
|Answer from NGA
February 22, 2011
|The answer to your question really depends upon the type of weed killer you use. Some degrade within days of application and others remain in the soil for many weeks. Round Up (glyphosate), for instance, degrades quickly and does not travel in the soil. Check the label of the weed killer you used to find the name of the active ingredient. Then submit another question to this forum and we'll be able to do the research for you and report the results.
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