Preen weed preventer products will work very well with almost any type of mulch. It’s very easy. First pull out any weeds that have already cropped up in the garden, so you have a clean bed. Then apply mulch to a thickness of approximately two inches.

Is Preen mulch any good?

It says its good for 3 months but I use it every 2 months when there is lots of rain. Works really good but not on all the weed seeds. Still worth the cost to cut the effort of pulling new weeds.

What is the best mulch to prevent weeds?

Straw is often used in vegetable gardens, but it tends to contain many weed seeds. Grass clippings are also popular, but they lack aesthetic appeal. Your best bet is bark mulch, such as Scotts® Nature Scapes® Color Enhanced Mulch or Scotts® Nature Scapes® Triple Shred Mulch.