Can I put fertilizer on my lawn shortly – the ground is still frozen. I live in Etobicoke, Ontario
Thank you for your inquiry,
As the lawn begins to appear from under the last bit of winter snow, gardeners have an urge to get outside and begin the spring-clean up. However, it is better to hold off on getting out the rake. Make sure to give the ground sufficient time to de-frost and dry up before beginning the clean up. Working on the lawn or garden while it is still wet will cause your soil to compact and make it much more difficult for your grass and plants to thrive.
Grasses require nitrogen and other nutrients during their period of active growth. Fertilizing grass when it is dormant is wasteful.
Landscape Ontario has an excellent article on: How to Maintain a Healthy Lawn. They recommend a Late fall fertilization to increase fall and spring root growth followed by a late May early June fertilization.