Give the lawn a treat
After the long, cold winter, the grass is growing again, and if left alone, it will soon use up any energy reserves in the soil.
If you have sorted out the moss and weeds earlier in spring and mow the grass regularly, all you will need to bring your lawn back to optimum condition is a balanced lawn food.
There are many from which to choose, both granular and liquid, like Miracle-Gro Liquafeed.
A regular supply of food will help keep your lawn thick and green.