If there's one thing that can prevent gardeners or homeowners from fully enjoying their lawns, it is weeds. Whether it's a small patch or a widespread bunch, weeds can ruin the appearance and health of a lawn if not contained and treated. Fortunately, there are a number of methods to get rid of weeds and allow you to get back to enjoying your lawn.
Pull weeds by hand or dig up with a weeding hoe or small shovel. Loosen the soil around the weed by digging around it. Soak the ground with hot water if it is too hard. Grab underneath the weed's crown and pull the entire root. (Many weeds can root as deep as 6 inches.)
Spray on a post-emergent herbicide to get rid of weeds once they have already sprouted. Choose either a selective or a non-selective post-emergent herbicide. (A selective herbicide will control annual, biennial and perennial weeds. A nonselective herbicide will kill any plant or weed it comes into contact with.) Use a liquid form, for best results. Attach the bottle to a garden hose and spray the herbicide when weeds have just begun to grow. Wait until the temperature is between 60 and 80 degrees F to apply. Do not apply the chemical when rain is forecast within the next 48 hours.
Aerate lawns to loosen highly compacted soils and stop the germination of chickweed, crabgrass and plantain. Consider reseeding a lawn as a last measure. Plant a cool-season grass if you live in a southern region state to help keep cool-season weeds out of your lawn.