One of the most common questions we hear from Colorado Springs homeowners is: "When should I trim my trees?" It's a great question — and the answer depends on the species, the condition of the tree, and what you're trying to accomplish.
After nearly 50 years of caring for trees across El Paso County, here's what our ISA Certified Arborists recommend.
Late Winter to Early Spring: The Best Time for Most Trees
For most tree species in Colorado Springs, the ideal time to prune is late February through early April — after the worst of winter has passed but before new growth begins. This is called dormant pruning, and it offers several benefits:
- Less stress on the tree — The tree isn't actively growing, so it can heal pruning wounds more efficiently when spring arrives.
- Better visibility — Without leaves, it's easier to see the tree's structure and identify dead, crossing, or damaged branches.
- Reduced disease risk — Many fungal diseases and insect pests are dormant in winter, so freshly cut branches are less likely to become infected.
- Ready for spring storms — Colorado Springs gets some of its heaviest, wettest snow in March and April. Trimmed trees handle snow loads much better.
Species-Specific Timing in Colorado
Not every tree follows the same schedule. Here's a quick guide for the most common species in El Paso County:
Ponderosa Pine
Prune in late winter or early spring. Avoid pruning from April through June when bark beetles are most active — fresh pruning wounds attract them. If you see pitch tubes (small blobs of sap) on the trunk, call an arborist immediately.
Blue Spruce (Colorado Spruce)
Best pruned in late winter before new candle growth emerges. Light shaping can be done in early summer after new growth hardens off. Never remove more than 25% of the live canopy in a single year.
Cottonwood
Prune in late fall or winter when fully dormant. Cottonwoods are prone to bacterial wetwood — dormant pruning minimizes the risk of infection spreading. These fast-growing trees often need regular structural pruning to prevent storm damage.
Aspen
Best trimmed in late winter. Aspens are susceptible to cytospora canker, which spreads more easily during the growing season. Always use clean, sharp tools and make proper cuts just outside the branch collar.
Elm
Only prune elms in late fall or winter (November through February). Pruning during the growing season increases the risk of Dutch elm disease, which is present in Colorado. This is one species where timing truly matters.
Fruit Trees (Apple, Crabapple, Cherry)
Prune in late February or early March before bud break. This promotes better fruit production and allows you to shape the tree before the growing season.
When NOT to Trim
There are a few situations where you should hold off on pruning:
- During active growth (May–June) — The tree is using all its energy to produce new leaves and branches. Pruning now forces it to redirect energy to healing.
- During extreme heat — Colorado Springs summers can hit 90°F+. Stressed trees are more vulnerable to pruning damage.
- During drought — If the tree is already struggling for water, don't add the stress of pruning.
- Right before a hard freeze — Fresh cuts are vulnerable to frost damage.
The Exception: Emergency and Safety Pruning
Timing guidelines go out the window when safety is a concern. Dead branches, storm damage, and branches threatening power lines or structures should be addressed immediately, regardless of the season. Our team provides 24/7 emergency tree service for exactly these situations.
How Often Should Trees Be Trimmed?
As a general rule for Colorado Springs properties:
- Mature shade trees: Every 3–5 years
- Young trees (under 10 years): Every 2–3 years for structural training
- Fruit trees: Annually
- Pines near structures: Every 2–3 years, especially for fire mitigation in areas like Black Forest and Woodland Park
Get a Professional Assessment
Every tree is different. The species, age, health, location, and your goals all factor into the best pruning plan. Our ISA Certified Arborists have been caring for Colorado Springs trees since 1976 — we'll give you an honest assessment and a clear plan.
Ready for a free estimate? Give us a call at (719) 481-2500 or request a quote online.
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