Your Trees Might Be Thirsty This Winter

Your Trees Might Be Thirsty This Winter

November 9, 2026 | News

When temperatures drop and the snow starts falling, watering your trees is probably the last thing on your mind. But here’s something many Boise homeowners don’t realize: your trees can still get thirsty in winter!

Just because your trees aren’t actively growing doesn’t mean they don’t need moisture. In fact, dry winter conditions can cause serious stress, especially for newly planted trees and evergreens.

Here’s what you need to know to keep your Boise landscape healthy through the colder months.

Why Do Trees Need Water in Winter?

Boise winters can bring freezing temperatures, dry spells, and plenty of sunshine. While deciduous trees lose their leaves and go dormant, their roots still benefit from adequate soil moisture.

Evergreens are especially vulnerable because they continue losing moisture through their needles or leaves, even during winter. When the ground is frozen, their roots can’t easily replace that lost water.

The result? Brown needles, dried-out branches, and winter damage that might not become noticeable until spring.

3 Signs Your Trees Might Need a Drink

1. The Soil Is Dry

If we haven’t had much rain or snow, check the soil a few inches below the surface. If it’s dry and the ground isn’t frozen, your trees may benefit from watering.

2. Your Evergreens Are Turning Brown

Browning needles or foliage, especially on the side exposed to winter sun and wind, can be a sign of winter drying. Keep in mind that browning can have several causes, so don’t automatically assume it’s a watering issue.

3. Your Trees Were Recently Planted

Newly planted trees haven’t had time to establish extensive root systems, making them more susceptible to winter moisture stress.

When Should You Water Trees in Boise During Winter?

Here’s the good news: you don’t need to drag out the hose every week!

During extended dry periods, consider watering when:

• Temperatures are above freezing, preferably around 40°F or warmer.
• The ground is thawed and can absorb water.
• There hasn’t been enough recent rain or snow to keep the soil moist.
• You can water early enough in the day for moisture to soak into the ground before temperatures drop.

Water slowly and deeply around the root zone rather than right against the trunk. The goal is to moisten the soil, not leave standing water or ice.

Remember: If the ground is frozen or already wet, skip watering.

Which Trees Need the Most Attention?

While all trees benefit from proper moisture, pay extra attention to:

• Newly planted trees: Their developing root systems make them more vulnerable.
• Evergreens: Pines, spruces, junipers, and arborvitae can lose moisture throughout winter.
• Young ornamental trees: Japanese maples and other recently planted landscape trees may need extra care while establishing.

A Little Winter Care Goes a Long Way

One of the easiest ways to protect your landscape investment is to pay attention to soil moisture throughout the winter.

A little extra care now can help prevent unnecessary stress and give your trees a healthier start when spring arrives.

Not sure if your trees need water or how to protect them this winter? Stop by FarWest Landscape & Garden Center in Boise! Our knowledgeable team is happy to help you keep your trees and landscape looking their best year-round.