Spring is a time to help rejuvenate your lawn by raking to improve the air circulation, weeding to remove unwanted material and mowing for a well-manicured appearance. You can also adjust the pH levels of your lawn in the spring by adding lime, if necessary.
Remove winter debris from your spring lawn with a hard-tine rake. A good raking will also open up the air spaces between the grass and allow air to circulate down into the crown of the grass plants, which will discourage fungus development. Make sure your lawn is dry before you rake.
Analyze your soil every two or three years to determine its pH level. Most types of lawn grasses prefer a pH level between 6.0 and 7.0 in order to thrive. Apply lime to your lawn in early spring to increase the pH levels of your soil and give your grass the optimum chance at a long life. The results of the soil test should offer recommendations as to how much lime you should apply.
Your first lawn cutting in the spring should not be too short; cut the grass to a height of about 2 inches throughout the spring, then increase the height to 2 1/2 inches during the summer. Mow frequently to remove no more than one third of the grass blades at one time, rather than mowing more grass at fewer intervals.
Remove perennial weeds during the early spring, either by pulling them or with herbicides. A thick, healthy lawn discourages weed growth, so remove the weeds before they gain a foothold. Make sure that you use a separate sprayer for herbicides than you use for fungicides or insecticides, and spray the lawn when the weeds are actively growing, not when they are dormant.