Beginner Gardening: Will mulch kill baby weeds?, 1 by Connie_G

Connie_G wrote:
My latest project involved having two dump truck loads of dirt dumped right over St. Augustine grass into a berm. (I would have removed the grass but my husband didn't want me to....I think he thought I'd remove the grass and then not finish the project!) I then planted over 100 plants, placed Home Depot's professional grade black barrier cloth, and then HEAVILY mulched it all--100 bags!! There have been less than 10 weeds on the berm...guess it worked!