How do I use Preen Garden Weed Preventer Plus Fertilizer if I am mulching for the first time?
If you are mulching 2 to 3 inches for the first time over bare soil, it is preferable to apply Preen Garden Weed Preventer Plus Fertilizer to the soil first. If weeds appear, it is likely that there were weed seeds in the mulch. In this case, remove these existing weeds, apply Preen Garden Weed Preventer Plus Fertilizer, and water or rake it into the top layer of mulch.
