Mature size
Allow for the tree’s eventual height, crown spread and root space—not merely its nursery-container size.
Right tree, right place
The cheapest tree problem is the one you never plant.
Species selection affects future shade, water use, maintenance, roots, clearance and whether the tree can reach maturity without continual conflict.
Purpose
Decide whether the priority is shade, privacy, seasonal color, screening, habitat or a landscape focal point.
Water and soil
Match the species to irrigation, drainage, heat exposure and the realities of the planting site.
Clearance
Consider buildings, pavement, overhead and underground utilities, sight lines and neighboring property.
Maintenance
Fruit, litter, pruning needs, pests, disease susceptibility and expected longevity all matter.
Fire setting
Placement, spacing and maintenance are especially important around homes in wildfire-prone areas.
Choose before you dig
A redwood, oak or ash cannot be kept permanently within a space meant for a small ornamental tree without damaging repeated pruning. Selecting a species whose mature form fits the site prevents decades of conflict.