Winterizing landscapes in Houston

Safeguarding Shrubs and Trees from Ice Damage in Houston

By Todd Farber, Aggie Horticulturist

Winter in Houston doesn’t often bring heavy snow, but freezing rain and ice storms can still wreak havoc on our gardens. The weight of ice can break branches, damage shrubs, and leave your landscape struggling to recover in the spring. Protecting your shrubs and trees from ice damage is essential to keeping your garden healthy and thriving. Here are my expert tips for safeguarding your landscaping this winter:

1. Prune Regularly Before Winter

Proper pruning is one of the best ways to prevent ice damage. Weak, dead, or diseased branches are more likely to snap under the weight of ice. Prune these branches in the fall or early winter to strengthen the structure of your trees and shrubs. For flowering trees and shrubs, make sure to prune at the appropriate time to avoid cutting off next year’s blooms.

2. Wrap Vulnerable Plants

In Houston, we occasionally experience freezing rain or light snow. Wrapping vulnerable shrubs and small trees with burlap, frost cloth, or breathable fabric can provide an extra layer of protection. Secure the material gently with twine to keep it in place without restricting growth. Avoid using plastic, as it can trap moisture and lead to other issues.

3. Stake Young Trees

Young trees with undeveloped root systems or top-heavy growth are especially prone to tipping or breaking under icy conditions. Staking can provide the extra support they need. Use sturdy stakes and soft, flexible ties that allow for some natural movement, which helps the tree build strength.

4. Mulch to Insulate Roots

Even in Houston’s milder winters, roots can be stressed by freezing temperatures. A layer of organic mulch around the base of your shrubs and trees helps insulate roots, retain moisture, and regulate soil temperature. Spread 2-3 inches of mulch in a donut shape, keeping it a few inches away from the trunk to prevent rot.

5. Gently Remove Snow or Ice

If ice or snow does accumulate on your trees or shrubs, it’s important to remove it carefully. Use a broom or your hands to gently brush off snow, starting from the top and working downward. Avoid shaking branches, as this can cause them to snap. If ice is present, let it melt naturally to prevent further damage.

6. Protect Against Salt Damage

In Houston, we’re less likely to deal with road salt, but it can still be an issue in areas where de-icing products are used. Salt can damage plants by leaching into the soil or splashing onto foliage. To protect your landscaping, use sand or eco-friendly de-icers instead of traditional salt. You can also create barriers with burlap screens to block salt spray.

7. Water Before a Freeze

Well-hydrated plants are better equipped to withstand cold weather. Water deeply before a freeze to help roots retain moisture. In Houston’s clay soils, be careful not to overwater, as this can lead to root rot. Aim to water earlier in the day so that excess moisture has time to drain before temperatures drop.

8. Inspect and Repair After Storms

After a winter storm, inspect your shrubs and trees for damage. Remove broken or hanging branches promptly to prevent further tearing or injury to the plant. For larger trees or significant damage, consider consulting a certified arborist to ensure the safety and health of your landscape.

By taking these steps, you can help your shrubs and trees survive Houston’s occasional winter freezes and come back strong in the spring. Remember, a little prevention goes a long way in protecting the beauty and health of your landscape.

If you have more questions about winter plant care, feel free to reach out. As an Aggie horticulturist, I’m here to help you keep your garden thriving year-round! sabrina@askgardenguy.com