Stopping weeds before they start is the secret to a low-maintenance garden. is a pre-emergent herbicide that creates a soil barrier to block seeds from germinating.
You must remove existing weeds first; Preen only prevents new growth, it doesn't kill what's already there. buy preen
For season-long protection, reapply every 9–12 weeks . Option 3: Quick Buyer's Guide Preen Garden Weed Preventer Stopping weeds before they start is the secret