The year-round ability of evergreens to create a warm atmosphere is priceless. However, to maintain the texture and color, these trees need some extra help. As the cold weather settles, you need to take a special approach to protecting these plants.
Although more resistant than deciduous trees, evergreens are vulnerable to heavy snow, freezing temperatures, and strong winds. Since all of these aren’t a rarity in Denver, knowing how to prepare for the cold season is key to keeping your evergreens in top shape. Let’s discuss protective measures for this winter.
When Should I Prune Evergreens?
The best time to prune most evergreens is late winter or early spring, just before the new growth begins. During this period, the trees are dormant. So, the risk of sap loss and pest infestation is low. Meanwhile, all the pruning scars will heal quickly once the new growth resumes in the spring.
Pruning techniques can vary depending on the type of evergreen.
- Spruce and Fir Trees: Pruning can include cutting back lateral branches to maintain shape or remove deadwood. These trees respond well to light trimming. They should never be overpruned.
- Pine Trees: Only prune the new growth, known as “candles,” to shape the tree without harming its health. Avoid cutting back to old wood because pines do not regrow from older branches.
- Shrubs (boxwoods or yew): Light shearing can maintain their shape, while selective pruning can improve air circulation and prevent disease.
Try not to prune your evergreens until February. Doing this could hurt your plants and keep them from growing properly next spring.
Should I Fertilize Before Winter?
The best time to fertilize evergreens is in the spring. This allows the nutrients to be absorbed and stored properly.
Late applications in fall can encourage new growth that’s more vulnerable to winter damage. However, if you use a slow-release or time-release fertilizer, you can apply it in the late fall as well. Just make sure to do it before the first frost hits.
Over-fertilizing evergreens also poses significant risks. Excess nutrients can lead to salt buildup in the soil, which may harm roots and disrupt water absorption.
Essential Tips for Winterizing Evergreens
To survive winter, evergreens need your help. These techniques can make sure your plants are ready for growth in the spring.
Watering
Provide deep watering throughout late fall until the ground freezes. Aim for about one inch of water per week and make sure to account for rainfall. The soil should be moist but not waterlogged. Proper watering is necessary to support root hydration during dormancy.
Mulching
Mulch helps insulate the roots, retain soil moisture, and regulate temperature fluctuations. Spread 2–4 inches of organic mulch, such as wood chips or bark, in a ring around the tree’s base. Keep the mulch a few inches away from the trunk to prevent rot and pest issues.
Protecting against Winter Damage
Use burlap or plant wraps to shield smaller trees and shrubs from harsh conditions. You can consider installing windbreaks, such as temporary fences or strategically placed stakes, to reduce wind exposure.
To clean evergreens from heavy snow, brush them off gently. Shaking the branches to remove the snow can damage them.
Enjoy Healthy Evergreens This Winter
While evergreens are strong plants, they need your help to make it through the winter. With the right approach to watering, fertilizing, and mulching, you can make sure these plants remain beautiful all year round.
If you have any questions about caring for evergreens this winter, please contact us at any time.