Trees in the high desert
Reno's high-desert climate is tough on trees. The National Weather Service notes large temperature swings from day to night and season to season, summers are dry, and many landscape trees depend entirely on irrigation. Water stress, wind, snow and cold all play a part in tree health here.
Water
Established trees in Reno need deep, infrequent watering during the dry months. Lawn sprinklers alone often don't reach deep enough for trees, and drip systems need enough emitters spread out toward the drip line, not just at the trunk. In drought restrictions, keep trees watered even if lawns go dormant; a lawn recovers quickly, but a mature tree can take years to replace. Mulch over the root zone conserves moisture.
Wind
Strong winds are common in the Reno area. Trees with weak branch unions, heavy one-sided canopies or root damage are more likely to fail in wind. Structural pruning when trees are young, thinning to reduce wind resistance on long limbs, and removing deadwood help. After a windstorm, look for cracks, hanging branches and soil heaving around the base.
Snow and ice
Snow loads in Washoe County vary by elevation. Wet, heavy snow can bend and break branches, especially on evergreens and on deciduous trees that still have leaves during an early storm. Gently brushing snow off small trees and shrubs helps; don't shake heavily loaded branches, which can snap. For large trees, pruning to correct weak structure is better than trying to clear snow after a storm.
Freeze damage
NOAA's engineering weather data for the Reno airport records about 123 freeze-thaw cycles a year. Sudden cold after warm spells can damage bark, and thin-barked young trees sometimes develop frost cracks or sunscald on the south and southwest sides in winter. Tree wrap on young trunks during winter, removed in spring, can help some species.
Choosing the right tree
Choosing trees adapted to the high desert reduces water use and maintenance. Ask a local arborist or nursery which species tolerate Reno's dry summers, cold winters and wind, and plant them where they'll have room to grow without crowding the house or power lines.
Fire-wise landscaping
Parts of the Reno area are near wildland vegetation. Keeping trees pruned away from roofs and chimneys, removing dead branches and debris, and spacing trees appropriately near the house reduce fire risk. Local fire agencies publish defensible-space guidance.
Before you hire
Ask Reno tree care contractors how they'll protect your yard and structures, whether they follow recognized pruning standards, whether they'll avoid topping and spikes on trees that are staying, and for proof of insurance. Look up the contractor with the Nevada State Contractors Board.
Planting near the house
Plant new trees far enough from the house, driveways and overhead lines that their mature canopy and roots won't crowd them. A tree that fits a small yard at planting can outgrow it in a decade.