What is a potential drawback of using landscape fabric under mulch?

• A. It reduces soil fertility.
• B. It completely eliminates weeds.
• C. It can impede water infiltration and root growth; select pervious or breathable fabrics if used.
• D. It increases soil aeration.

Answer: (C)

A major drawback of using landscape fabric under mulch is that it can impede water infiltration and root growth. The fabric acts as a barrier to water and air, so if it isn’t breathable, water may move slowly or unevenly through it, which can stress roots and slow plant establishment. If you do use fabric, opt for pervious or breathable types to allow moisture and oxygen to reach the soil. This idea helps explain why some gardeners avoid fabric or choose only lightweight, well-ventilated options. The other statements don’t fit as well: fabric doesn’t automatically reduce soil fertility, it doesn’t completely eliminate weeds, and it doesn’t increase soil aeration—in many cases it can actually hinder it.