I've used black plastic mulch for years. At the end of the season I wash it, dry it, and roll it up for storage until spring.Never noticed a problem with mold, etc. I've also used the landscape cloth but it won't keep Bermuda grass from growing through. Then it's a pain (you know where!) to pull the roots out. Last year I used RED plastic mulch under some of my tomatoes and there was a remarkable difference! The tomatoes grown over the red plastic were larger and ripened sooner. I cleaned the red plastic and will use it again this year. Paulette(posted 9009 days ago)