Summer Tree Care Tips for Denver Homeowners

How to Keep Your Trees Healthy Through the Hottest Months

As the summer winds down in Denver, our trees begin to feel the effects of prolonged heat, dry conditions, and storm stress. While many people assume tree care ends in spring, the truth is that late summer is a critical time to assess your trees and give them the support they need to transition into fall.

At Colorado Premier Tree Care, we’re here to help Denver homeowners keep their trees healthy, safe, and thriving all year round. Below are our top end-of-summer tips to protect your landscape.

1. Deep Water Your Trees (But Do It Right)

By late summer, soil moisture levels are often depleted—especially after several hot, dry weeks. Trees, particularly young or newly planted ones, need consistent deep watering to stay hydrated through the end of the season.

Tip: Water early in the morning and focus on soaking the root zone, not the trunk. Use a slow trickle or a deep root watering tool, and aim for about 10 gallons per inch of trunk diameter per week.

2. Inspect for Insects and Disease

Summer heat can stress trees, making them more susceptible to pests and fungal issues. In Denver, watch for signs of:

• Emerald Ash Borer (especially now that it's in Congress Park)

• Ips beetles in pines and spruces

• Leaf scorch, powdery mildew, and chlorosis

If you notice unusual leaf drop, dieback, holes in bark, or discolored foliage, have an ISA-certified arborist inspect your trees.

3. Prune for Health and Storm Prep

Now is a good time to prune out dead, damaged, or rubbing branches, especially before Denver’s fall storms and early snows arrive.

Proper pruning:

• Improves airflow and light penetration

• Reduces the risk of storm damage

• Enhances tree structure and safety

Avoid heavy pruning in late summer—focus on light shaping and removal of hazardous limbs.

4. Refresh Mulch to Conserve Moisture

Reapply or freshen up mulch around the base of your trees to protect roots, regulate temperature, and retain soil moisture.

Use 2–4 inches of organic mulch like shredded bark or wood chips. Keep it a few inches away from the trunk to prevent rot and pests.

5. Consider a Late-Season Fertilization

Late summer is a great time to apply a slow-release fertilizer to prepare your trees for the demands of fall and winter. Colorado’s alkaline soils often lack key nutrients, and deep root fertilization can make a noticeable difference in tree vigor.

At Colorado Premier Tree Care, we offer soil treatments tailored to the species, age, and condition of your trees.

6. Plan for Fall Tree Services Now

As summer wraps up, it's wise to schedule your fall tree care early—especially pruning, removals, and disease management.

Our Denver tree service team is already booking for September and October. Whether you need a pre-winter safety check or a fertilization plan, we can help.

Serving Denver Homeowners Since 2017

Colorado Premier Tree Care has been proudly serving residents and businesses across the Denver Metro since 2017. Our team of ISA-certified arborists specializes in:

• Tree health assessments

• Pruning, removals, and risk mitigation

• Pest and disease management

• Tree fertilization and soil improvement

• EAB inspections and treatments

Schedule Your Late Summer Tree Check-Up Today

Give your trees the care they deserve before cooler weather sets in. Contact Colorado Premier Tree Care today for a personalized consultation and recommendations tailored to your property.

📞 Call us at [720-990-7004]🌐 Visit [coloradopremiertreecare.org]📧 Email [experts@coloradopremiertreecare.org]