Webs in Trees in Florida: Webworms, Tent Caterpillars, or Spider Webs?

Short Answer

Webs in Florida trees are often caused by fall webworms, spiders, or other web-building insects, not a tree-killing disease. Fall webworms build webbed nests around leaves and feed inside them. The damage usually looks worse than it is, especially when the tree is otherwise healthy.

The concern rises when webs appear with heavy defoliation on a small or stressed tree, dead branches, repeated pest pressure, trunk decay, borer holes, mushrooms at the base, storm-damaged limbs, or branches over a house, driveway, pool cage, walkway, or vehicle. In those cases, the webbing may not be the main problem, but it can point you toward a tree that needs closer inspection.

Do not burn webs, climb the tree, or cut large limbs just to remove webbing. For high branches, rooflines, power lines, or trees over targets, use a safer tree-care approach.

Why Tree Webs Make Homeowners Nervous

A large white or gray web can make a healthy tree look sick from the street. It may cover the end of a branch, hold brown leaves, and make the canopy look messy.

A homeowner may wonder whether the tree is dying, whether the web is a spider problem, whether it will spread, or whether the whole branch should be removed. Usually, the answer is less dramatic than the web looks.

The better first questions are:

• Are leaves being eaten inside the web?
• Is the web around a branch tip or stretched between branches?
• Is the tree otherwise healthy?
• Are any branches dead or cracked?
• Is the affected limb over a roof, driveway, walkway, or pool cage?
• Are power lines nearby?
• Did this appear after a wet period or late-season growth?

Fall Webworms: The Common “Web Nest” Culprit

Fall webworms are caterpillars that build webbed nests around leaves. They feed inside the web as they grow. In Florida, these webs may show up on many deciduous trees and can look dramatic.

UF/IFAS explains that fall webworms build webbed nests to protect themselves while feeding. They can defoliate the leaves inside the nest, but on otherwise healthy trees the damage is usually aesthetic rather than a long-term threat.

That is the key point. The web may look bad, but a healthy mature tree can often tolerate some branch-tip defoliation.

Webworms vs. Tent Caterpillars

Homeowners often call any web in a tree a “tent caterpillar,” but fall webworms and tent caterpillars behave differently.

Fall webworms commonly build webs around the ends of branches and feed inside the web. Tent caterpillars are often associated with thicker tents in branch forks or crotches and may leave the tent to feed.

For a homeowner, the exact insect matters most if treatment is being considered. For a first safety decision, focus on the tree’s overall condition and whether affected branches are creating risk.

Spider Webs in Trees

Not every web is a caterpillar nest. Spiders build webs between twigs, shrubs, tree branches, porch lights, fences, and quiet corners of the yard.

Spider webs are usually not a tree-health problem. They are more likely when:

• the web is thin and open
• it stretches between branches
• it does not enclose leaves
• there are no caterpillars inside
• leaves are not being skeletonized or eaten
• the canopy looks healthy

If there is no leaf damage and the tree looks normal, spider webs usually do not require tree work.

When Webs Are Usually Less Serious

Webs are usually less serious when:

• only a few branch tips are affected
• the tree has a full canopy
• the tree is mature and otherwise healthy
• there is no branch dieback
• the trunk and root flare look sound
• there are no mushrooms, cracks, oozing, or sawdust
• the affected branch is not over a target
• the problem appears late in the season

In these cases, monitoring may be enough. The web may look ugly, but the tree may not need treatment.

When Webs Deserve More Attention

Take a closer look when webs appear with:

• heavy defoliation on a small tree
• repeated severe infestation
• a newly planted or drought-stressed tree
• dead branches
• thinning canopy
• borer holes or sawdust
• trunk cracks
• bark loss
• mushrooms or conks at the base
• root plate movement
• storm-damaged limbs
• a limb over a roof, driveway, pool cage, or walkway
• branches near power lines

At that point, the webbing may be one symptom in a larger tree-care problem.

Should You Remove the Webs?

For small trees or low branches, homeowners may sometimes break open or remove webs by hand, with a pole, or by pruning a small affected branch. Opening the web can expose caterpillars to birds and other natural predators.

Avoid risky methods:

• do not burn webs
• do not climb the tree
• do not use ladders on uneven ground
• do not cut large healthy limbs
• do not work near power lines
• do not spray without identifying the pest
• do not over-prune the canopy

If the webs are high in a large tree and the tree is otherwise healthy, removal may not be worth the risk.

Why Burning Webs Is a Bad Idea

Old advice about burning webworm nests still circulates. Do not do it.

Burning can damage bark, injure leaves, start a fire, harm the tree, and create safety risks near homes, fences, dry mulch, palm fronds, pines, pool screens, or utility lines. A temporary pest web is not worth a fire hazard.

Can Tree Trimming Help?

Tree trimming can help in limited cases.

Trimming may make sense when:

• the affected branch is small and reachable
• the branch is already dead or damaged
• the tree needs roof or driveway clearance anyway
• a small ornamental is heavily affected
• the limb is structurally weak
• trimming is part of broader deadwood removal

Trimming is not a good solution when it would remove large healthy limbs just to eliminate a temporary web problem. Over-pruning can stress the tree more than the insects.

Should You Spray for Webworms?

Spraying is not always needed. Treatment depends on pest identification, timing, severity, tree size, and whether a product is labeled for the pest and host plant.

For large mature trees with light webbing, treatment may not be practical or necessary. If treatment is considered, identify the pest first, treat early when larvae are small, follow label directions, and avoid harm to beneficial insects, people, pets, water, or pollinator plants.

Webs After Storms

Storms can make webbed branches more noticeable. Broken limbs, opened canopies, wet weather, and late-season growth can all change how a tree looks.

After storms, check for:

• cracked limbs
• hanging branches
• split unions
• limbs over roofs or driveways
• broken tops
• trunk cracks
• root plate movement
• branches near power lines

If the branch is both webbed and storm-damaged, the branch condition matters more than the web.

When Removal Enters the Conversation

Webs alone are rarely a tree removal reason.

Removal becomes part of the discussion when the tree also has serious risk signs:

• dead or mostly dead canopy
• major trunk decay
• root plate movement
• new lean
• large dead limbs over targets
• repeated major limb failure
• storm damage
• borer activity plus decline
• tree too close to a structure for its condition

In those cases, the webbing may simply be what made the homeowner look closer.

What to Photograph Before Calling

Take photos of:

• the full tree
• the webbed branch tips
• close-up of webbing if reachable from the ground
• leaf damage
• any visible caterpillars
• trunk base
• canopy condition
• dead branches
• nearby roof, driveway, pool cage, or walkway
• power lines from a safe distance
• storm damage if present

Photos help a tree service or extension office understand whether the issue is pest-related, pruning-related, or risk-related.

Internal Links to Add

When publishing, consider adding natural internal links to:

• Tiny Rows of Holes in Tree Bark
• What Does Sawdust at the Base of a Tree Mean?
• Tree Removal vs. Tree Trimming
• When Does a Tree Problem Become an Emergency Tree Service Call?

When to Call ProTreeTrim

If webs in a tree come with dead limbs, roof contact, storm damage, heavy branch decline, borer signs, trunk decay, or a tree standing over a driveway, pool cage, walkway, or home, ProTreeTrim can help you decide whether the next step is monitoring, trimming, removal, or emergency service.

For tree trimming, tree removal, emergency tree service, or stump grinding help in Florida, visit ProTreeTrim.com or call (855) 498-2578.

Sources Reviewed

• UF/IFAS Gardening Solutions, Fall Webworm: https://gardeningsolutions.ifas.ufl.edu/care/pests-and-diseases/pests/fall-webworm/
• UF/IFAS Extension Escambia County, Fall Webworms: https://blogs.ifas.ufl.edu/escambiaco/2025/08/27/weekly-what-is-it-fall-webworms/
• University of New Hampshire Extension, Fall Webworm & Eastern Tent Caterpillar: https://extension.unh.edu/resource/fall-webworm-eastern-tent-caterpillar-fact-sheet
• Penn State Extension, Fall Webworm: https://extension.psu.edu/fall-webworm/
• TreesAreGood / ISA, Managing Hazards and Risk: https://www.treesaregood.org/Tree-Owner-Resources/Managing-Hazards-and-Risk
• OSHA Tree Care Industry Hazards and Solutions: https://www.osha.gov/tree-care/hazards-solutions

FAQ

Are webs in trees killing my tree?

Usually no. Fall webworm webs often look worse than they are. Healthy mature trees can often tolerate light or moderate branch-tip defoliation.

What is the difference between webworms and tent caterpillars?

Fall webworms often build webs around branch ends and feed inside the web. Tent caterpillars often build tents in branch forks and may leave them to feed.

Should I cut off branches with webs?

Only if the branch is small, reachable, and pruning makes sense. Do not remove large healthy limbs just because of webbing.

Can I burn webs out of a tree?

No. Burning can damage the tree and create serious fire and safety risks.

When should I call a tree service for webs?

Call when webs appear with dead branches, storm damage, roof contact, power-line proximity, heavy decline, or branches over targets.