Mulching With Grass Clippings - Knowledgebase Question

Ewing, NJ
Question by catchnbass
May 13, 1999
I recently planted a vegetable garden. Is it OK to use grass clippings for mulch?


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Answer from NGA
May 13, 1999

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Fresh grass clippings contain a good measure of nitrogen, but there are a few cautions to consider before using them as a mulch in your vegetable garden. The clippings tend to mat down as they decompose, which may prevent water from reaching the soil if it's being applied over the top. And, if you use chemicals on your lawn, there may be some residues on the grass clippings. Perhaps these chemicals are not suitable for vegetable gardens. If you want to use the clippings in your garden, spread them out and allow them to dry before using them. Most of the nitrogen will leach out, but they will still make good mulch material. Finally, there is no truth to the statement that grass clippings will prevent flowers and fruit from forming.

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