Boost Your Trees’ Lifespan: Winterizing Secrets You Can Apply Now

New England winters are often hard on trees. How well trees survive a winter depends on factors like geographic location, weather conditions, tree species, and tree health. Some tree species, for example, are more susceptible to winter damage than others.  Signs of winter damage include sunscald, winter desiccation, frost cracks, branch breakage, root damage, and pest and disease infestation. You can take steps now, however, to reduce these threats.

Winterizing trees protects them from extreme temperatures, wind damage, diseases, and pests. This protection, in turn, helps trees survive winter and supports recovery and stability. More importantly, it sets the stage for vigorous spring growth. The bottom line: Winterizing your trees helps ensure their short-term and long-term survival. Properly watering, pruning, and mulching are critical steps when winterizing trees.

Watering  

Water is essential for trees to survive, regardless of the season. A tree’s watering needs depend on the species, climate, and soil conditions. Deep watering is ideal. Aim to soak the soil deep enough to reach the root zone. That’s generally about 12-18 inches (30-46 cm) deep. Water slowly. You want the water to penetrate rather than runoff. Avoid over-watering.

How do you know when to water? Water young trees so you always keep the soil moist. Use a soil probe or your finer to check the moisture level. Water the tree if the top couple of inches of soil are dry. Gentle watering at this time can help thaw the soil and prevent root damage.) If the ground is frozen, watering ensures moisture in the soil.  Applying mulch enhances the watering process.

Mulching

Mulching is another critical winterizing activity. It protects the trees from extreme temperatures, conserves moisture, and suppresses weeds. Fall is an excellent time to mulch r. Doing so protects roots from winter’s cold and helps retain the soil’s moisture.

You can also mulch during the early spring, especially if the mulch has been washed away over the winter. How you apply the mulch is critical. Consider the tree species beforehand. Some species require more mulch than others.

Remove any weeds growing around the tree before applying mulch. Keep it away from the tree trunk, which can lead to rot. Spread the mulch evenly around the tree’s base. Also, check for pests as you spread the mulch, which can sometimes harbor pests like voles, ants, mice, slugs, and snails.

Pruning in the Winter

Winter is a great time to prune trees. Most deciduous trees, such as maples, oaks, and elms, can be pruned in the winter. It’s a good idea to prune trees with dormant buds. Pruning fruit trees in the winter also works. It can help to maintain their shape, increase fruit production, and rejuvenate older trees. Like pines and spruces, evergreens are another tree species you can prune in the winter. Prune these trees lightly. Heavy pruning can hurt a tree.

Here are some wintertime pruning tips:

• Don’t prune when it’s freezing.
• Remove dead or damaged wood.
• Thin out dense canopies.
• Shape the tree appropriately.

Think about a tree’s species when pruning. A tree’s pruning needs depend on its species, age, or overall health. Review our other pruning blog posts on this site.

New England winters can be brutal on trees. How well they survive depends on several factors, including their species. You can boost the chances of trees surviving the winter by winterizing them. Properly watering, mulching, and pruning trees can protect trees and help them combat the season’s threats. Use our guidelines to help winterize your trees. If you’re not clear on how to do that, talk with a local arborist or the experts at RITree for personalized advice on winter tree care for trees.