I mulched with grass clippings that I had partially composted. I really believe things greened up after and I have not had an issue with excess weeds.

I am not sure if fresh grass clippings is the best choice; you may be introducing a lot of weed and grass seed. If that is not a concern, then go for it.

I mulch my garden almost exclusively with fresh grass clippings, straight from the bagger to the garden, several inches thick.

It works awesome at weed suppression and really improves the soil. I have been doing this for years.

It works so well I even went out and bought a stupidly expensive bagger for my riding mower so I could get more clippings than what the push mower was giving me.

When you first put them down, give the stems of plants an inch or so of breathing room, the clippings can heat up a bit as they decompose.

Grass clippings are fine for mulch, but as JWW mentioned, they should be composted some. Not only because of weed seeds, but FRESH grass is high in Nitrogen and a 3" thick mat of it will heat up like a compost pile. Don't want to "cook" your veggies.

Kevin

This post was edited by woohooman on Sun, Jun 16, 13 at 15:35