Here’s what to look for by: Roy Schwartz, Certified Arborist – San Diego, CA
Bugs in your trees? You’re not alone. In San Diego, pests are a year-round problem for many homeowners. But don’t panic. You can manage tree bugs with the right approach. As a certified arborist, I’ve helped hundreds of clients protect their trees from harmful insects. Here’s how to handle it—step by step.
Step 1: Identify the Problem Early
First, look closely at your trees. Do the leaves look chewed, curled, or discolored? Do you see tiny holes in the bark? Are there sticky spots on the trunk or the ground below? These are all signs of insect activity.
You may also notice sawdust-like material near the base. That’s called frass, and it’s often left behind by boring insects. You might even see sap dripping or leaves dropping out of season. Don’t ignore these signs. Early detection matters. (619) 282-3562
Step 2: Know the Common Tree Bugs in San Diego
Different bugs affect different types of trees. In San Diego, we see a lot of:
- Aphids – Small, soft-bodied insects. They suck sap from leaves and stems. They often leave behind sticky honeydew, which attracts ants and sooty mold.
- Borers – These insects tunnel into tree trunks and branches. They weaken the structure and can kill the tree.
- Scale insects – These look like small bumps on bark or leaves. They feed on sap and stress the tree.
- Caterpillars – Some chew leaves, while others defoliate entire branches.
- Whiteflies – These are tiny, winged pests found on the undersides of leaves. They cause yellowing and leaf drop.
Each pest behaves differently. Some are just a nuisance. Others pose a serious threat. That’s why proper identification is critical. (619) 282-3562
Step 3: Don’t Reach for Chemicals Right Away
Many people go straight for pesticide sprays. But that’s not always the best choice. Spraying the wrong product can hurt your tree, beneficial insects, and even local wildlife. Also, bugs often build resistance to overused chemicals.
Instead, start with safer methods. Here are some eco-friendly options:
- Hose off aphids or whiteflies with a strong stream of water.
- Prune out infected branches to stop spread.
- Use horticultural oils or insecticidal soap for soft-bodied pests.
- Introduce beneficial insects, like ladybugs or lacewings, to feed on harmful bugs.
These methods are gentle on the environment but still effective. (619) 282-3562
Step 4: Improve Tree Health
Healthy trees resist bugs better. Stress makes them vulnerable. So, support your tree’s natural defenses.
Here’s how:
- Water deeply but infrequently. Shallow watering causes weak roots.
- Mulch around the base (but not against the trunk) to keep soil moist and cool.
- Avoid over-pruning. Removing too much at once stresses the tree.
- Fertilize if needed, but don’t overdo it. Too much nitrogen can attract pests.
Strong trees bounce back faster—even if bugs attack. (619) 282-3562
Step 5: Call an Arborist When in Doubt
Not sure what’s eating your tree? That’s okay. Some infestations are hard to diagnose. Others may require a professional plan.
If you’re unsure, call a certified arborist. I can inspect the tree, identify the pest, and recommend the best solution. Sometimes we use targeted treatments. Other times, we make small changes in care. Every situation is different.
Also, don’t wait until it’s too late. Some bugs work fast. Borers, for example, can kill a tree in one season. If your tree looks weak, call right away. (619) 282-3562
Step 6: Avoid Spreading the Problem
Insects move fast from tree to tree. You can accidentally spread pests by pruning or using dirty tools.
Here’s how to stop that:
- Clean your tools after every use with alcohol or bleach solution.
- Don’t move infested branches or firewood to new locations.
- Dispose of infected material properly. Don’t compost it or toss it into green waste bins.
Contain the problem to protect other trees nearby. (619) 282-3562
Step 7: Know When a Tree Can’t Be Saved
Unfortunately, some infestations go too far. If the bugs have damaged the structure or the tree is dying, removal may be the best option. I always prefer to save trees when possible. But sometimes, taking one down prevents more damage to your property—or nearby trees.
If a tree must go, I’ll walk you through the process and help you choose a replacement that resists pests better.
(619) 282-3562
Step 8: Plan for the Future
Don’t just react—plan ahead. Choosing the right tree species for your location makes a big difference. Some trees naturally resist bugs and diseases better than others.
When planting new trees, I recommend:
- California native species. These adapt better to local pests and climate.
- Regular inspections. Look over your trees once a month.
- Seasonal care. Prune, mulch, and fertilize at the right times.
Preventing a problem is always easier than fixing one. Call today: (619) 282-3562
Final Thoughts from Roy
Bugs in your trees don’t have to be a disaster. With quick action, smart care, and a little help from an expert, you can protect your trees and enjoy a healthy landscape year-round.
If you’re in San Diego and see signs of trouble, don’t guess. Call Roy Schwartz, Certified Arborist. I’ll give you honest advice, eco-friendly solutions, and the peace of mind that comes with expert tree care.
📞 Need Help with Bugs in Your Trees?
Contact me today for a tree inspection or consultation.
Roy Schwartz – Certified Arborist | San Diego, CA
(619) 282-3562
Let’s keep your trees strong, green, and bug-free—together! 🌳🪲
