How to Protect Your Plants From Boise’s Winter Weather
November 2, 2026 | News
Winter in Boise can be tough on your landscape! Between freezing temperatures, dry winter winds, and unpredictable weather, your plants can take a beating if they aren’t properly prepared.
A few simple steps now can make a big difference when spring rolls around.
Whether you’ve recently planted new trees and shrubs or want to protect your established garden, here are 6 ways to help your Boise plants survive winter.
1. Don’t Forget to Water
One of the biggest mistakes Boise homeowners make is turning off their sprinklers and forgetting about their plants until spring.
Even during winter, trees and shrubs can lose moisture, especially evergreens.
Our tip: During extended dry periods, water newly planted trees, shrubs, and evergreens when temperatures are above freezing and the ground isn’t frozen. Water earlier in the day so it has time to soak into the soil before temperatures drop.
2. Add a Layer of Mulch
Think of mulch as a protective blanket for your plants!
A 2-3 inch layer of organic mulch helps insulate the soil, moderate temperature changes, and retain moisture throughout winter.
Our tip: Spread mulch around the root zones of trees, shrubs, and perennials, but keep it a few inches away from trunks and plant crowns. Piling mulch against stems can encourage rot and other problems.
3. Protect Sensitive Plants From Freezing Temperatures
Not every plant handles Boise’s winter temperatures the same way.
Newly planted shrubs, marginally hardy plants, and certain broadleaf evergreens may benefit from a little extra protection during extreme cold.
Our tip: Use breathable frost cloth to cover vulnerable plants during severe cold snaps. Secure it against the wind and remove or adjust coverings when conditions improve. Avoid placing plastic directly against foliage.
4. Hold Off on Heavy Pruning
It might be tempting to give everything one last trim before winter, but put those pruning shears down!
Heavy fall pruning can stimulate tender new growth on some plants, leaving it vulnerable to freezing temperatures.
Our tip: Save most major pruning for the appropriate season for each plant. For now, focus on removing broken, dead, or diseased branches when necessary.
5. Protect Young Trees From Winter Damage
Young trees can be especially vulnerable to winter conditions in the Treasure Valley.
Sudden temperature changes and intense winter sunshine can cause bark damage, while rabbits and other animals may chew on tender trunks.
Our tip: Consider light-colored tree wraps or guards for susceptible young trees. Apply them in late fall and remove wraps in spring to prevent moisture buildup and other issues.
6. Give Your Potted Plants Some Extra Attention
Those containers on your patio may need more protection than plants growing in the ground.
Roots in containers are exposed to colder temperatures, making them more vulnerable to freezing.
Our tip: Move vulnerable potted plants into an unheated garage or sheltered area during extreme cold. Make sure they receive appropriate light and occasional water, depending on the plant. Hardy outdoor containers can also benefit from insulation and protection from drying winds.
Give Your Boise Garden a Head Start on Spring
A little winter preparation goes a long way! Keeping plants properly watered, protecting their roots, and knowing when to leave them alone can help your landscape come back healthier in spring.
Not sure which plants in your yard need extra protection?
Stop by FarWest Garden Center, our knowledgeable team can help you find the right products and advice to keep your trees, shrubs, and garden plants healthy through Idaho’s colder months.
Because a beautiful spring garden starts with a little winter care!