--- title: Winter Watering for High Desert Trees url: https://battleborntreeservice.com/blog/winter-watering-high-desert-trees/ business: Battle Born Tree Service address: 6301 US Highway 50 East, Carson City, NV 89701 phone: 775.232.8243 hours: Office Monday-Friday 8:30 am-5:00 pm; phones answered seven days a week; 24-hour emergency service credentials: ISA Certified Arborist WE-11728A on staff; Nevada Business License # 20131580674; fully insured type: Tree service (removal, crane work, pruning, stump grinding, defensible space, snow removal, firewood) --- - [Home](https://battleborntreeservice.com/) - [Blog](https://battleborntreeservice.com/blog/) - Winter watering for high desert trees # Do trees need water in winter in the high desert? Yes. University of Nevada, Reno Extension's 2026 guidance says to water trees about once every 3 to 4 weeks in winter, when daytime temperatures are above 40 degrees F and there is no snow or ice on the soil. Evergreens keep their needles and still need water. Key takeaways - Water every 3 to 4 weeks in winter when the soil is not frozen or snow covered and days are above 40 degrees F. - Soak to 12 to 18 inches, with a slow trickle, under the outer edge of the branches. - Newly planted evergreens: every 2 to 3 weeks for the first 2 to 3 years. - Do not overwater; clear standing water by nightfall. Winter here is often cold, sunny and windy, not snowy, and dry spells pull moisture out of the soil. This post summarizes the Extension guide and adds what we can say as a tree crew. ## Why would a tree need water in winter? Extension says winter here does not always bring the deep snowpack trees rely on in other regions. Instead there can be long stretches of cold, sunny, windy weather that dries the soil. Evergreens keep needles through winter and continue to photosynthesize at a low level, so they keep using water. Dormant deciduous trees still have active roots. Stress usually shows in late winter or early spring, after the damage is done. The climate is dry to begin with. NOAA's 1991 to 2020 normals put yearly precipitation at 9.34 inches in Carson City and 7.35 at the Reno airport. ## How often and when should you water? Extension's guide recommends watering about once every 3 to 4 weeks in winter, when daytime temperatures are above 40 degrees F and the soil is free of snow and ice, so water can soak in. Light snow adds little usable moisture, so you still need to water unless there is a significant, lasting snowpack. For newly planted evergreens, the guide says every 2 to 3 weeks for the first 2 to 3 years, with more frequent soil checks. ## How do you water a tree in winter? Use a slow trickle from a hose or a soaker hose, and soak the soil 12 to 18 inches deep, where most roots are. Water under the outer edge of the branches (the dripline), not at the trunk. Extension also recommends 2 to 4 inches of mulch, kept a few inches from the trunk. Do not overwater. Let the soil dry between waterings and remove standing water by nightfall to avoid freeze damage to the trunk. Check the soil with a probe or long screwdriver: it pushes easily into wet soil and stops where the soil is dry. ## Which trees need it most? The guide covers all trees, evergreen and deciduous, and singles out evergreens because they hold their needles. Trees on slopes, in wind and in rock or gravel landscaping may dry out faster. If you converted lawn to rock, check what your trees now get. See [watering mature trees in the high desert](https://battleborntreeservice.com/guides/watering-mature-trees-high-desert/). ## What about a tree that already looks stressed? Browning, thin crowns and dead tips can come from water, roots, structure or pests, and watering alone will not tell you which. A certified arborist can say whether the answer is pruning, support or removal. See [drought stress and dieback](https://battleborntreeservice.com/tree-guide/drought-stress-and-dieback/). Battle Born does not fertilize, spray or treat for pests. Battle Born Tree Service has two ISA Certified Arborists on staff, including ISA Certified Arborist WE-11728A; see [arborist consultation](https://battleborntreeservice.com/tree-services/arborist-consultation/). Call [775.232.8243](tel:775.232.8243) for a free estimate. Keep a note on the calendar for the first mild day of each month. If the ground is thawed and there is no snow on it, that is your watering window. Hoses left connected can freeze and split, so drain them after each use. Moving the trickle around the canopy edge in a different spot each time covers more of the root zone than soaking one place. ### Sources - [University of Nevada, Reno Extension: Should I Water my Trees in the Winter? (Jensen, 2026)](https://extension.unr.edu/publication.aspx?PubID=8355) (read October 17, 2026) - [NOAA National Centers for Environmental Information: U.S. Climate Normals 1991-2020](https://www.ncei.noaa.gov/products/land-based-station/us-climate-normals) (read October 1, 2026) - [University of Nevada, Reno Extension: Tips for Healthy Landscape Trees](https://extension.unr.edu/publication.aspx?PubID=2649) (read October 17, 2026) ### Talk to the office [775.232.8243](tel:775.232.8243) | Monday to Friday | 8:30 am - 5:00 pm | |---|---| | Saturday and Sunday | Office closed, phones answered | Phones answered seven days a week. 24-hour emergency service. [Free estimate](#quote) ### Keep reading - [Watering mature trees in the high desert](https://battleborntreeservice.com/guides/watering-mature-trees-high-desert/) - [Drought stress and dieback](https://battleborntreeservice.com/tree-guide/drought-stress-and-dieback/) - [How to tell if a tree is dead or dying](https://battleborntreeservice.com/guides/is-my-tree-dead-or-dying/) - [Arborist consultation](https://battleborntreeservice.com/tree-services/arborist-consultation/) - [October tree care in Carson City and Reno](https://battleborntreeservice.com/blog/october-tree-care-carson-city-reno/) - [Ice melt, salt and your trees](https://battleborntreeservice.com/guides/ice-melt-salt-and-trees/) ### Terms on this page [Arborist](https://battleborntreeservice.com/glossary/arborist/) [The full glossary](https://battleborntreeservice.com/glossary/) ## More from the blog Pruning and care October 17, 2026 5 min read ### What should you do with your trees in October in Carson City and Reno? In October, finish watering while the ground is open, look over your trees for dead or hanging limbs, and clear leaves and needles away from the house. Save most live-wood pruning for the dormant seas Pruning and care October 17, 2026 6 min read ### Young trees in new subdivisions: the first ten years A young tree in a new subdivision needs very little pruning in its first two or three years, then steady structural pruning to build one strong central trunk and well-spaced branches. The ISA says tre Removal and equipment October 17, 2026 6 min read ### Where tree debris and green waste go in Reno and Carson City Green waste has a few legitimate homes in our area: the landfill or transfer station if the load is only wood and green waste, a fire district drop-off day or curbside chipping program if you qualify, [All posts](https://battleborntreeservice.com/blog/) ## Questions people ask Still have a question? Call [775.232.8243](tel:775.232.8243). Phones are answered seven days a week. ### Should I water pines in winter? Extension says evergreens still need water because they keep their needles and photosynthesize at a low level. Follow the 3 to 4 week schedule when the soil is not frozen. ### Can I water when it is frozen? No. The guide says to water when the soil is free of snow and ice so water can soak in, and above 40 degrees F in the daytime. ### Does snow count as watering? Light snow adds little usable moisture. Supplemental watering is still needed unless there is a significant, lasting snowpack. ### Is it still worth mulching in fall? Extension recommends 2 to 4 inches of mulch, kept a few inches from the trunk.