Trees add beauty, shade, and value to any property. However, they can also create serious headaches when something goes wrong. If you own a home in Tempe, AZ, understanding common tree problems can save you time, money, and stress. The desert climate here is tough on trees, and local conditions make certain issues more likely than others.

Many homeowners ignore early warning signs. As a result, small issues grow into costly emergencies. Whether you have a sprawling mesquite, a towering eucalyptus, or a row of citrus trees, knowing what to watch for puts you ahead of the problem.

In this guide, we cover the most common tree problems Tempe residents face and explain what you can do about them. From disease and pest damage to storm-related hazards, we have you covered.

Why Tempe’s Climate Creates Unique Tree Challenges

Tempe sits in the heart of Maricopa County, where summer heat routinely climbs above 110 degrees. Additionally, the region experiences intense monsoon storms from July through September. These conditions put trees under significant stress year after year.

Unlike cooler climates, trees in Tempe rarely get a long, mild growing season. Therefore, they must push through extreme heat, drought, and sudden heavy rains — sometimes all in the same week. This constant stress weakens trees and makes them more vulnerable to disease and structural failure.

Furthermore, many homeowners plant species that are not well-suited to desert conditions. Non-native trees often struggle and develop health issues that native species handle more easily.

The Most Common Tree Problems in Tempe, AZ

1. Root Damage and Soil Compaction

Root problems are among the most overlooked tree problems in Tempe. Compacted soil — especially in older neighborhoods — restricts root growth and limits water absorption. As a result, trees become unstable and struggle to thrive.

Roots can also invade sewer lines, lift sidewalks, and damage foundations. Moreover, overwatering in clay-heavy soils suffocates roots and promotes rot. Many homeowners don’t realize root damage is happening until the tree begins to lean or decline visibly.

Signs to watch for include:

• Soil heaving or cracks around the base of the tree
• Leaning or shifting trunk position
• Wilting or yellowing leaves despite regular watering
• Mushroom growth near the base, which often signals root rot

2. Bark Damage and Sunscald

Tempe’s intense sun can scorch tree bark, a condition called sunscald. This is especially common in younger trees or recently transplanted ones. Because of this, exposed bark dries out, cracks, and creates entry points for pests and disease.

Sunscald often appears on the south and southwest sides of the trunk. In addition, improper pruning that removes too much canopy at once can suddenly expose bark that was previously shaded. This is a common mistake homeowners make when attempting DIY tree trimming.

3. Pest Infestations

Pest pressure is a serious tree problem throughout Maricopa County, including Tempe and neighboring communities like Mesa and Chandler. Several insects actively damage local trees and, if left unchecked, can kill them.

Common pests in the Tempe area include:

• Bark beetles — These bore into stressed trees and disrupt water flow beneath the bark.
• Mistletoe — While technically a parasitic plant, mistletoe behaves like a pest. It steals water and nutrients from host trees.
• Aphids and whiteflies — These insects attack foliage and weaken tree health over time.
• Termites — Dead or dying trees near your home attract termites, which can then spread to structures.

Early detection makes treatment far more effective. Therefore, inspect your trees regularly — especially after summer heat spikes.

4. Fungal Disease and Root Rot

Fungal diseases thrive when monsoon moisture combines with warm soil temperatures. Tempe homeowners often see fungal problems surge in late summer. Furthermore, overwatering during other months creates the wet conditions that fungi love.

Texas root rot, also called cotton root rot, is a particularly destructive fungal disease common in Arizona soils. It can kill otherwise healthy trees quickly. Additionally, powdery mildew affects ornamental trees and shrubs, reducing their vigor and appearance.

Signs of fungal disease include:

• White, powdery coating on leaves
• Sudden wilting or leaf drop in late summer
• Dark, sunken lesions on bark
• Soft, mushy wood near the base

5. Storm Damage and Structural Weakness

Monsoon storms are a major source of tree problems for Tempe homeowners. High winds, heavy rain, and occasional microbursts can snap branches, uproot trees, or cause large limbs to fall without warning. As a result, property damage and safety risks increase significantly during storm season.

Structural weaknesses — like co-dominant stems, included bark, or heavy canopy growth — make trees far more vulnerable. Moreover, trees that haven’t been properly trimmed in years tend to hold more wind resistance and fail more easily in storms.

Proactive tree trimming before monsoon season is one of the best ways to reduce your risk. Request a free, no-obligation estimate before storm season arrives so your trees are evaluated and ready.

Tree Problems Specific to Popular Tempe Tree Species

Mesquite Trees

Mesquite trees are hardy and drought-tolerant. However, they are prone to mistletoe infestations and can develop weak branch unions over time. Without regular pruning, mesquites grow unpredictably and may pose a hazard near structures.

Eucalyptus Trees

Eucalyptus trees grow fast and provide excellent shade. On the other hand, they are well-known for dropping large limbs with little warning — a phenomenon sometimes called “sudden branch drop.” This makes routine inspection and trimming essential for safety.

Palm Trees

Palms are iconic in Tempe and across Greater Phoenix. First, they require regular trimming to remove dead fronds that become fire hazards. Next, untrimmed palms attract roof rats, which use the dead fronds as nesting material. Finally, palms can suffer from nutrient deficiencies — especially potassium — that cause yellowing and decline.

Our team handles palm tree trimming and removal throughout Tempe, Scottsdale, and surrounding Maricopa County communities. Contact the AZ Tree Trimming & Removal team to schedule service for your palms before the next heat wave hits.

How to Spot Tree Problems Early

Early detection is key to keeping your trees healthy and your property safe. Therefore, homeowners should walk their property regularly and look for these warning signs:

• Dead or hanging branches — These are called “widow makers” for a reason. Remove them promptly.
• Cracks or splits in the trunk — These signal structural failure and need professional evaluation.
• Unusual leaf color or early leaf drop — This often points to disease, pests, or root problems.
• Fungal growth on bark or soil — This is a common sign of decay inside the tree.
• Leaning that wasn’t there before — Sudden lean often means root failure is underway.

In addition, schedule a professional tree inspection at least once a year. An experienced arborist can spot hidden issues before they escalate.

When to Call a Professional Tree Service

Some tree problems are manageable with simple care adjustments. However, many situations require professional attention. You should call a tree service right away if:

• A large limb is hanging or has already fallen
• Your tree is leaning toward your home, fence, or power lines
• You see extensive bark damage, fungal growth, or signs of severe pest infestation
• Storm damage has left your tree structurally compromised
• You are unsure whether a tree is dead or still salvageable

AZ Tree Trimming & Removal serves homeowners across Tempe, Scottsdale, Phoenix, and communities throughout Maricopa County including Gilbert and Chandler. Our insured crews provide fast, reliable service — with complimentary estimates and a clean job site every time.

Frequently Asked Questions About Tree Problems in Tempe

How often should I have my trees inspected?

Most arborists recommend a professional inspection at least once a year. Additionally, inspect after major storms or any time you notice sudden changes in your tree’s appearance or structure.

Can a diseased tree be saved?

It depends on the disease, how far it has progressed, and the tree species. Therefore, early detection is critical. Some trees can be treated and saved with proper care, while others may need to be removed for safety reasons.

Is it safe to trim my own trees?

Small, low branches can sometimes be pruned safely by homeowners. However, any work near power lines, above shoulder height, or involving large limbs should always be handled by a licensed professional. Safety risks are significant without proper training and equipment.

How do monsoons affect tree health?

Monsoons bring high winds and heavy rain that test a tree’s structural integrity. Moreover, sudden moisture in dry soil can cause roots to loosen, increasing the chance of uprooting. Pre-season trimming greatly reduces storm-related tree failures.

What should I do after a storm damages my tree?

First, stay away from any downed limbs near power lines and call your utility company. Next, document the damage with photos. Then, contact a professional tree service for a safety assessment before attempting any cleanup yourself.

Protect Your Property — Get Expert Tree Care Today

Tree problems rarely fix themselves. In fact, they almost always get worse without proper attention. Fortunately, catching issues early and working with experienced professionals makes all the difference for your property and your peace of mind.

AZ Tree Trimming & Removal is a family-owned company with decades of hands-on experience serving Tempe, Scottsdale, and the Greater Phoenix area. We offer tree trimming, tree removal, stump grinding, palm tree care, and 24-hour emergency service when you need it most.

Don’t wait for a small problem to become a costly emergency. Contact AZ Tree Trimming & Removal today to request your free, no-obligation estimate and keep your trees — and your property — safe all year long.