Why Plastic Weed Barrier Harms Tree Roots and Better Alternatives

The Suffocating Effect of Plastic

A silver maple developed surface roots (2–8 inches diameter) and basal sprouts after six years under plastic weed barrier. Plastic blocks oxygen exchange; roots enlarge desperately to absorb oxygen, causing stress sprouts at the base.

Solution

1. Remove plastic.
2. Cover exposed roots with soil conditioner.
3. Lay woven weed fabric (allows water/oxygen penetration).
4. Top with pine straw.

Woven fabric is far superior for weed control under trees.