
Since deciduous trees and many perennial plants become dormant for the winter, you might think that most of your landscape maintenance is done for the year. But winter is the time when you have to prepare your trees and other plants for spring through a winter watering program.
Replacing trees and other plants damaged or killed by harsh winter weather can be prevented or greatly minimized with a winter landscape plan. Failing to properly winterize your property may result in a costly plant replacement in the spring. Here are a few reasons why you need a winter watering program your landscape:
The Importance of Winter Watering
Trees and shrubs that have suffered under tight watering restrictions during the summer, may become even more stressed in late fall when your irrigation system is shut down for the winter.
To remain a healthy root system, most trees need 10 gallons of water per diameter inch of trunk per month. Additionally, shrubs need 3-5 gallons of water per month depending on size, age and type.
For instance, in Colorado, with its windy, dry climate and low moisture it is very important to winter water trees and shrubs for a deep root feeding. In the Rocky Mountain region, even though snow generally is plentiful, it takes at least 10-20 inches of snow to equal one inch of water.
As a guideline, Colorado State University recommends regular monthly winter watering from October to March. Our certified arborist, Pete Evers recommends to a depth of 12 inches, underneath the branches within the circle bounded by the drip line.
Watering once per month will help with winter desiccation. Evergreens lose moisture on sunny winter days. If the soil doesn’t contain enough moisture to replace the loss, needles–starting from the outside and moving inward–dry out and turn brown. Sometimes, however, the soil is moist but the roots can’t absorb it. The ground might be frozen or the roots damaged.
Winter Desiccation in Evergreen Tree and Shrubs
In much of Colorado, winters can have extended warm, dry, windy spells. Warm winters cause winter drought. This puts your trees and shrubs at risk from dry winters. Recent transplants, evergreens and shallow rooted species such as lindens, birches, and Norway and silver maples are prone to winter desiccation, and need adequate moisture even during winter.
Benefits of adding Yucca extract to landscape water
Yucca plants are great at attracting and holding water in the soil. Yucca is high in a natural wetting agents called saponins, a steroidal-based natural chemicals that actually make water wetter, breaking the polarity of the water molecule.
At TCA, we will add yucca extracts to our water. This allows the water to penetrate deeper into the soil and to effectively spread throughout the root system. Since the water is dispersed more evenly in the root zone, your plants will be able to use water more efficiently, and should be able to go longer between irrigation cycles without adverse effects on the plant.
Is your property ready for winter? Contact Terracare Associates to find out how you protect and preservation the beauty and health of the plants on your property.
This is part 2 of a 3 part series on the benefits of winterizing and preserving your landscape:
Part 1: The Importance of Winterizing Your Landscape
Part 2: Why Your Property Need a Winter Watering Program
Part 3: Landscape Preservation: How Integrated Pest Management Can Save You Money


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