Winter desiccation can be very hard on evergreen trees. Dry soil in winter often cannot replace the moisture trees lose to the cold dry winter air. The symptoms of winter damage and die back may not become visible until spring or summer growth begins. Winter damaged trees may only show a few dead branches or twigs. In most severe cases, the entire tree may die.
Evergreen trees are more susceptible to winter desiccation than deciduous trees as the evergreens retain their needles and provide more area for moisture loss. Young evergreens are most vulnerable to injury because they are still developing the necessary root system to supply moisture to support the above ground portion of the plant.
If we continue to have higher temperatures and soil thaw this winter, we may have an opportunity to replenish soil moisture to our evergreen trees. Deep watering can be accomplished through slow watering and saturating the ground with a garden hose. The objective is to water slowly, dispersing the flow of water to get the water deep down to the tree’s roots. Water at the drip line of the tree where the majority of the roots exist. Do not water the trunk, as it can lead to rot and a decline in tree health.
For further information on tree health or horticultural management, please contact the Chouteau County Extension Office at 622-3751. You can also stop at our office located in the green building next to the Chouteau County Courthouse.
Montana State University U.S. Department of Agriculture and Montana Counties Cooperating. MSU Extension is an equal opportunity/affirmative action provider of educational outreach.
