Actually there are things that prevent weeds that are not chemical. Â Corn Meal is one of them. Â The weeds need to be gone but it will prevent new ones from growing. Â
@tatertot58: Interesting; I've never heard that. Â I'll have to read more into this. Looks as though, like anything, there's pluses and minuses: Â http://puyallup.wsu.edu/~linda%20chalker-scott/horticultural%20myths_files/Myths/Corn%20gluten.pdf
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