If you have some thin areas in your turf, Barrett can help! There is a general rule of thumb that overseeding should be done in the fall and in conjunction with aeration. This surely is an option, but it need not be observed as the rule.
Spring can be a great time to slit-seed your lawn. The temperatures are at a great point to accommodate seed germination and establishment. Your existing turf is also ready to be fertilized at this time of year. In conjunction with seeding you can, and should, apply an application of starter fertilizer. This will jump start the new seed as well as your existing turf.
A further action to improve the quality of your turf is to start a fertilizer and weed control regimen. The new seed needs a chance to establish itself before it is ready to withstand a broadleaf chemical treatment. A safe rule of thumb on this is after the second cutting of the newly germinated grass. An approximate time frame on this would be about six weeks.
The team at Barrett has expertise in these areas and would be happy to assist you!
