Height. Will the tree bump into anything when it is fully grown? [ sizing guide ]
Canopy spread. How wide will the tree grow?
Is the tree deciduous or coniferous? (Will it lose its leaves in the winter?)
Form or shape. A columnar tree will grow in less space. Round and V-Shaped species provide the most shade. [ shape guide ]
Growth rate. How long will it take for your tree to reach its full height? Slow growing species typically live longer than fast growing species.
Soil, sun, and moisture requirements.
Fruit. Fruit trees are beautiful, but they are messy…