How to Prevent Weeds Before They Start

The most effective weed control strategy isn't pulling them out—it's stopping them from ever seeing the light of day. Here is how the pros keep lawns weed-free.

The Power of Pre-Emergents

The best weed control is preventing them from sprouting in the first place. Pre-emergent herbicides create a chemical barrier in the top layer of soil that stops weed seeds from successfully germinating and developing roots.

Targeting the Right Weeds

Not all weeds are treated equally. Pre-emergents are highly effective against grassy weeds but may be less effective against perennial broadleaf weeds that grow from existing root systems.

• Crabgrass: The most common target for spring pre-emergents.
• Dandelions: While pre-emergents help, a thick lawn is the best defense against broadleaf weeds.

Timing is Everything

Pre-emergents must be applied before the soil temperature reaches 55 degrees Fahrenheit for several consecutive days. In Western NY, this usually means early to mid-spring.

"Mother Nature abhors a vacuum. If you have bare dirt or thin grass, weeds will fill the void. The best herbicide is a thick, healthy stand of turf."

A Thick Lawn is the Best Defense

Weeds thrive in bare spots and thin grass. Maintaining a thick, healthy lawn naturally chokes out weeds by blocking sunlight.

Cultural Practices

How you care for your lawn plays a massive role in weed prevention. Good cultural practices can significantly reduce your reliance on chemical controls.

• Proper Mowing Height: Keep your mower blade around 3 to 3.5 inches.
• Deep Watering: Encourages deep grass roots that outcompete shallow-rooted weeds.
• Overseeding: Fill in bare patches in the fall before weeds can claim them in the spring.