If you already have an established birch tree, the last two steps, proper cultural practices and insect control, can still be used to maintain your tree in a healthy condition. Step 1 - Selecting the Proper Site. In the forest, birch trees thrive on cool, moist soils.emember that most birch trees growing in yards can reach 40-50 feet in height. Compacted soils-Avoid areas that are compacted or likely to become compacted, such as along trails or driveways. Remember, birch trees have a very shallow root system that can be easily damaged by soil disturbance.