How Rain Brings Weeds That Invade Your Yard Rain is great for lawns, trees, and gardens—but unfortunately, it’s just as great for weeds. After a good rainstorm, many homeowners notice unwanted plants popping up almost overnight. That’s because rain plays a major role... It is cold, gloomy and the skies are grey. Rain from the clouds beats on the surface. Seeds below the surface will then soak up the rain water, then eventually sprout their limbs above the ground. Straight out of a horror film like zombies sprouting from their graves,...