Summers in Arizona are no joke — with triple-digit temperatures, intense sunlight, and little rain, your trees endure some of the harshest growing conditions in the country. Even native desert species need extra care to stay healthy through the long, hot season.

At AZ Trees, we help homeowners across Phoenix, Scottsdale, Mesa, Chandler, Gilbert, and Peoria keep their trees strong, hydrated, and protected all summer long. Follow this simple summer tree care checklist to make sure your landscape thrives despite the heat.

1. Deep Water Your Trees Correctly

The most important step in summer tree care is proper watering. Arizona’s dry air and intense sun can deplete soil moisture fast, leaving trees dehydrated. Shallow, frequent watering only wets the surface — your trees need deep hydration.

How to deep water:

• Water slowly and deeply at the drip line (the edge of the tree’s canopy).

• Soak the soil to a depth of 2–3 feet for large trees.

• Mature desert trees: every 10–14 days.

• Younger or non-native trees: every 5–7 days.

Use drip irrigation or a slow hose flow for 30–60 minutes to encourage deep root growth.

2. Add Mulch to Conserve Moisture

Mulching is one of the simplest and most effective ways to help your trees handle extreme heat. A 3–4 inch layer of organic mulch — like wood chips or bark — helps the soil retain moisture and keeps roots cooler.

Spread mulch around the tree base but keep it a few inches away from the trunk to prevent rot and pest issues. Mulch also improves soil quality over time as it breaks down.

3. Inspect Trees for Heat Stress

High temperatures can cause heat stress, especially in young or non-native trees. Checking regularly for signs of stress helps you take action before the damage worsens.

Watch for:

• Wilting or curled leaves

• Brown or scorched leaf edges

• Premature leaf drop

• Cracked or sunburned bark

If you spot these signs, increase deep watering and consider adding temporary shade.

4. Provide Shade for Sensitive Trees

Even desert-adapted trees can use some extra help during the hottest months. Use shade cloths, canopies, or landscape netting to protect young or delicate trees from direct sunlight.

For sensitive species like citrus, ficus, or newly planted trees, you can also apply tree wrap or diluted white paint on exposed trunks to prevent sunscald and bark cracking.

5. Avoid Heavy Pruning During Summer

It may be tempting to trim back overgrown branches, but heavy pruning in summer can actually stress your trees. Trimming too much during high heat exposes inner branches and bark to direct sun, leading to burns and dehydration.

If you must prune:

• Only remove dead, damaged, or crossing branches.

• Save major shaping or thinning for late winter or early spring.

• Avoid pruning palms until seed pods or fronds have fully matured.

AZ Trees offers professional trimming services designed to protect your trees while maintaining proper structure and health.

6. Check Irrigation Systems

Make sure your drip irrigation or sprinkler systems are working properly before peak summer. Clogged emitters or broken lines can leave trees dry for weeks without you realizing it.

Inspect regularly for:

• Uneven watering patterns

• Pooling water near trunks

• Low pressure or leaks

Proper irrigation maintenance ensures your trees receive consistent, efficient hydration.

7. Protect Against Pests

Hot, dry weather attracts common Arizona pests like borers, spider mites, and aphids. These insects can weaken trees already stressed by the heat.

Keep an eye out for:

• Sticky residue (honeydew) on leaves

• Holes in bark or sawdust at the base

• Discolored or curled foliage

If you notice an infestation, contact AZ Trees for an inspection. Our arborists can identify the problem and recommend safe, effective treatments.

8. Fertilize Carefully — or Wait Until Fall

Fertilizing during extreme heat can stress your trees even more. Too much nitrogen can increase water needs and risk root burn. If your trees look healthy, skip fertilizing until early fall.

If they appear weak, use a slow-release, low-nitrogen fertilizer and water deeply before and after application.

9. Prepare for Monsoon Winds

Monsoon season often brings sudden gusts and storms that can topple trees with unbalanced canopies. Prevent damage by scheduling structural pruning before July.

Balanced, properly trimmed trees are far less likely to break or fall during high winds. AZ Trees can evaluate your property and trim accordingly for monsoon safety.

10. Schedule a Professional Tree Inspection

Even with careful maintenance, summer stress can take a toll. Having your trees checked by a certified arborist ensures any hidden issues — like root rot, pests, or dehydration — are caught early.

At AZ Trees, we perform comprehensive tree health inspections to keep your landscape safe, strong, and beautiful year-round.

Frequently Asked Questions (FAQs)

Q: How often should I water my trees in the summer?
A: Mature desert trees need deep watering every 10–14 days, while younger or non-native trees may need it weekly.

Q: Can I plant new trees in summer?
A: It’s possible, but not ideal. Fall is the best time to plant in Arizona, when temperatures are cooler and soil moisture is more stable.

Q: Is it okay to prune palm trees in summer?
A: Yes, early summer is the best time for palm cleaning — before seed pods drop or monsoon winds arrive.

Keep Your Trees Healthy All Summer with AZ Trees

Arizona summers are tough, but with the right care, your trees can thrive through the heat. From watering schedules to trimming and inspections, AZ Trees provides the professional expertise you need to protect your landscape year-round.

We proudly serve Phoenix, Scottsdale, Mesa, Chandler, Gilbert, and Peoria with expert tree trimming, palm maintenance, and tree health services tailored for the desert climate.

Call today at 480-794-0706 to schedule your free estimate!