Some purists argue that bare soil promotes stronger root systems by forcing plants to search deeper for water. There’s a kernel of truth there—but it’s a tiny, bitter kernel. For most of us, the benefits far outweigh the work.
In reality, a light layer of mulch doesn’t make plants lazy; it reduces stress. And stressed plants produce bitter fruit. Un-stressed plants give you that sweet, umami bomb you crave on a BLT.
Imagine you’re on a beach vacation: you don’t want to fight for shade or food. Neither does your tomato. Give it the mulch-equivalent of a beach umbrella and a cold drink.
One Last Cool Fact
Did you know that red plastic mulch can increase yields by up to 20%? According to a study from USDA-ARS, far-red light reflected by the plastic actually influences how the plant grows and fruits. It’s like giving your tomatoes a nightlight for photosynthesis.
Meanwhile, black plastic mulch warms the soil faster in spring, perfect for those of us in cooler climates who want tomatoes by the Fourth of July. Choose your fighter.
If you’re feeling poetic, lay down living mulch—a low-growing companion like clover or thyme. It’s the cottagecore aesthetic your garden didn’t know it needed.
