How do I grow grass on two bare spots that used to be evergreens?

soil is very acidic now....work up soil ,generously sprinkle on baking soda and water in well. Wait for a couple weeks for several rains or water 2x a week well

Scatter some hay over the spots, thick enough to not see the dirt underneath. The seeds from the hay should get things going again!

Were the trees uprooted and pulled out, or did someone grind them down to the ground? if stumps and roots are still there, not only is there less ground for the new grass to get a hold on, but evergreens will send shoots upward that can become new trees. Evergreens by their nature can resist drought, very cold temps and fire better than most other types of trees, which makes them difficult to get rid of by our puny efforts. But try any! 😇