Castellanos Tree Services Blog

Frequently Asked Questions About Tree Maintenance

Castellanos Tree Services • 28 January 2025
A tree is being cut down in front of a house in a residential neighborhood.

Trees are a vital part of the environment, adding beauty and value to our surroundings. Proper tree maintenance is essential for their health and longevity. At Castellanos Tree Services, we provide expert tree care in the greater Fresno area. Here are answers to some of the most frequently asked questions about tree maintenance.


How often should I prune my trees?

Pruning frequency depends on the tree species, its growth rate, and the purpose of pruning. In general, most trees benefit from a thorough pruning every few years. Young trees may require more frequent pruning to establish a strong structure, while mature trees may only need occasional trimming to remove dead or hazardous branches.


When is the best time to prune trees?

The best time to prune most trees is during their dormant season, usually in late winter or early spring before new growth begins. This reduces stress on the tree and minimizes the risk of pest infestations or diseases. However, some flowering trees should be pruned right after they bloom to avoid cutting off next year’s flowers.


How do I know if my tree is unhealthy?

Common signs of an unhealthy tree include:

  • Discolored, wilted, or dead leaves.
  • Cracks or cavities in the trunk.
  • Dead or dangling branches.
  • Fungal growth, such as mushrooms, at the base of the tree.
  • Premature leaf drop or sparse foliage

If you notice these signs, consult a certified arborist for an evaluation.


How can I protect my trees during construction or landscaping projects?

Construction projects can stress or damage trees. To protect them:

  • Install a protective barrier around the tree's drip line.
  • Avoid cutting through roots or compacting the soil.
  • Consult an arborist to assess risks and recommend protective measures.


When should I remove a tree?

A tree should be removed if it:

  • Is dead or dying.
  • Poses a safety hazard, such as leaning precariously.
  • Has significant root damage.
  • Is diseased or infested beyond recovery


Always consult a professional to confirm removal is necessary.


Why should I hire a professional arborist?

Arborists are trained in tree care and maintenance, ensuring your trees receive proper care. They can safely perform tasks like pruning, diagnosing issues, and removing trees if needed. Attempting these tasks without expertise can harm the tree or create safety risks.


Tree Care in Fresno, CA

When you need professional tree care in Fresno and the surrounding area, contact Castellanos Tree Services at 559-284-7835. Our local arborists can expertly handle your tree care needs. Feel free to give us a call to arrange a free estimate for tree services in Fresno, CA!

A white truck with a tree chipper attached to it is parked in front of a house.

5 Signs That a Tree Is Posing a Safety Threat to Your Home

by Castellanos Tree Services • 27 February 2025
Trees can add great beauty to your property, but when they become hazardous, they can pose a serious threat to your home and safety. Recognizing the warning signs of a dangerous tree can help prevent costly damage and potential injuries. At Castellanos Tree Services, we provide expert tree removal in the greater Fresno area. Here’s a look at five warning signs that a tree is posing a safety threat to your home. Leaning or Unstable Growth A tree that is suddenly leaning or has been growing at an angle for years could be at risk of falling. While some trees naturally develop a lean, a noticeable shift in its position may indicate a weakening root system or soil erosion. In severe weather conditions, an unstable tree is much more likely to topple over, causing damage to your home. Cracks or Cavities in the Trunk The trunk of a tree is its main support system, and any major damage to it can compromise the tree’s stability. Large cracks, cavities, or missing bark may indicate internal decay. A hollow tree trunk is particularly concerning, as it suggests the tree has lost structural integrity and is more prone to collapse. Dead or Falling Branches A tree shedding large branches frequently is a sign of distress. Dead, brittle, or hanging branches are not just a nuisance—they can be extremely dangerous, especially if they are located over a driveway, roof, or walkway. Even a seemingly healthy tree can have hidden decay that leads to branch failure, making regular inspections crucial. Fungal Growth at the Base Fungus growing at the base of a tree can be a sign of internal decay. Since the roots are responsible for anchoring the tree into the ground, any compromise to their health weakens the entire structure. If the tree’s roots are failing, it may not take much force for the tree to fall. Excessive Pest Infestation A tree infested with insects such as termites or carpenter ants can be in danger of collapse. These pests feed on the wood and weaken the tree from the inside out. If you notice an increase in wood shavings at the base of the tree, small holes in the trunk, or an uptick in insect activity, it may be a sign that the tree’s structure is deteriorating. Over time, the damage caused by pests can make the tree more susceptible to breaking apart during storms or heavy winds. Tree Removal in Fresno, CA When you need tree removal in Fresno and the surrounding area, contact Castellanos Tree Services at  559-284-7835  . Our local arborists can expertly handle your tree care needs. Feel free to give us a call to ask for a free estimate for tree services in Fresno, CA!
A tree with lots of leaves against a blue sky.

Can You Save a Dying Tree?

by Castellanos Tree Services • 9 December 2024
When a tree shows signs of poor health, many property owners wonder if it can be saved. At Castellanos Tree Services in Fresno, we often get questions about whether dying trees can recover. The answer depends on the tree's condition and the underlying issues causing its decline. Here’s what you need to know. Identify the Cause of the Problem The first step in saving a dying tree is to determine what’s wrong. Common issues include pests, diseases, nutrient deficiencies, overwatering, or physical damage. In Fresno, trees often face challenges like aphid infestations, root rot, and drought stress. Look for warning signs such as yellowing leaves, dead branches, fungal growth, or bark damage. An ISA-certified arborist, like those at Castellanos Tree Services, can assess the tree’s condition and identify the problem. Provide Proper Care Once the issue is identified, targeted care can help revive the tree. For example: If pests are the problem, treatments like insecticides or natural predators can be applied. Diseases may require pruning infected branches and applying fungicides. Nutrient deficiencies can be addressed with specialized fertilizers. For drought-stressed trees, deep watering and mulching can improve hydration. Timing is critical. Acting quickly when you notice issues gives your tree the best chance of recovery. Know When Removal is Necessary Unfortunately, not all trees can be saved. If a tree is too far gone—such as when more than half its canopy is dead or it poses a safety hazard—it may need to be removed. At Castellanos Tree Services, we always prioritize saving trees when possible, but we’ll advise tree removal in Fresno when it’s the safest and most responsible choice. The best way to keep trees healthy is to prevent problems before they start. Regular tree trimming, seasonal pruning, and routine health assessments are key to maintaining vitality If your tree is showing signs of decline, don’t wait. Call Castellanos Tree Services at  559-284-7835  for an evaluation. With over 30 years of experience, our ISA-certified arborists can help diagnose the issue and recommend a plan to restore your tree’s health, or ensure safe removal if necessary. Thank you for considering our local arborists for your tree care needs.