In the spring it is very important to wait until the soil temperature reaches 13° below the frost line before we apply compost or seed. The best time to get started in our region is the Victoria Day long-weekend any time prior to that the soil is generally too cold to germinate grass. Step 1 take a fan rake and clear all debris off the lawn Step 2 aerate the lawn Step 3 apply compost pellets to your lawn after the aeration, it will allow the compost to start breaking down at the root zone where it's needed most Step 4 apply your grass seed Step 5 water your lawn every day every morning for 14 days.If your lawn has grub damage it is important to have a nematode application done prior to aerating and overseeding.Repeat all of the same steps in the fall as you would in the spring until your lawn has thickened up where it now crowds out the weeds. If your lawn has problems with Grubs & Crane flies it is best to wait and apply your nematodes after Labour Day, Crane flies take longer to lay their eggs. Make sure you kill all of the bugs that are feeding on your lawn not just 1 of them.