At this time of year, we both admire trees for the spectacularly colorful show they provide to our landscape and curse them for the constant supply of leaves they drop on our lawns. But trees add value to our lives, to our homes and to our waterways that we may not always appreciate. Fall is the perfect time of year to plant trees. Soil is warmer, and water is abundant in fall. By spring, they will be strong enough to withstand the summer's heat and will be farther along in their growth cycle.