A wasp nest in a tree is one of the most common wasp problems homeowners run into, and one of the most commonly mishandled. Some people spot a gray paper ball hanging from a branch and reach for a garden hose or a long stick. Others notice it only after the leaves fall in autumn and wonder whether it’s been a danger all summer.
For non-aggressive wasps I've had great luck spraying nests with this Spectracide wasp remover in the evening. For a nest up high in an eave, soffit, or tree, this Gotcha pole adapter clamps onto the can so you can spray from the end of an extension pole and treat the nest from 10+ feet away instead of standing right under it. And for anything aggressive I wear this ridiculous-looking upper torso beekeeping suit and keep my distance. It seems silly, but trust me, I learned the hard way.
The right response depends on three things: which insect built the nest, how high it is, and how close it is to where people walk, play, and mow. This guide covers how to identify tree nests, what else gets mistaken for one, whether nests damage trees, when it’s fine to leave a nest alone, and how to get rid of one without getting stung or falling off a ladder.
For a broader look at every nest type around the home, see our complete guide to wasp nests.
Several wasps and hornets in North America nest in trees and shrubs. The nest’s shape and location usually tell you who built it.
If you find a large, gray, football- or teardrop-shaped paper nest hanging in a tree, it almost certainly belongs to bald-faced hornets. Despite the name, these are not true hornets. They are black-and-white aerial yellowjackets (Dolichovespula maculata) found across most of the United States and southern Canada.
Bald-faced hornets defend their nest aggressively. They’ll often come out in numbers when the nest is bumped, shaken, or exposed to strong vibration. These are the tree nests that cause the most stings. Our bald-faced hornet identification guide covers them in detail.
The aerial yellowjacket (Dolichovespula arenaria) is a yellow-and-black relative of the bald-faced hornet. It builds similar enclosed gray paper nests in trees, shrubs, and on buildings. Its nests tend to be smaller and more rounded. Most yellowjacket species nest underground, so a yellowjacket nest hanging in a tree is usually this species. See our yellowjacket nest identification guide for comparisons.
Paper wasps (Polistes species) build open, umbrella-shaped combs with no outer covering. You can see the hexagonal cells from below. On trees and shrubs, look for them:
Paper wasp nests rarely get bigger than a dinner plate and usually hold a few dozen wasps. They’re far less defensive than hornets, but trimming a hedge right into a hidden nest is a classic way to get stung several times. Our paper wasp nest guide explains how to spot them.
Some nests are inside the tree rather than hanging from it. If you see wasps flying in and out of a knothole, crack, or hollow trunk, you’re likely dealing with:
Cavity nests are hidden and often much larger than the entrance suggests. They’re also the hardest kind to treat yourself.
In far southern Texas and parts of Arizona, a gray, layered paper nest in a tree or shrub may belong to the Mexican honey wasp (Brachygastra mellifica), one of the few wasps that store honey. These nests can last more than one season. You can read about them in our wasp honey article.
Plenty of things in trees get mistaken for wasp nests, especially after the leaves drop. Before you spray anything, rule these out.
| What you see | What it might be | How to tell |
|---|---|---|
| Round, tan or brown ball on an oak twig, from marble to golf-ball size | Oak gall | Hard or spongy, attached directly to the twig or leaf, no entrance hole with insects coming and going. Caused by tiny gall wasps, harmless to people |
| Silky tent in branch forks or at branch tips | Tent caterpillars or fall webworms | Visible webbing with caterpillars inside, no paper |
| Small, spindle-shaped case covered in bits of leaves, hanging from twigs | Bagworm case | Usually 1–2 inches long, on evergreens like arborvitae and juniper |
| Big clump of leaves high in the canopy | Squirrel nest (drey) | Made of leaves and twigs, not paper |
| Dense cluster of bees hanging from a branch | Honeybee swarm | Thousands of fuzzy, golden-brown bees in a beard-like cluster, no paper nest |
| Bees entering a hole in a trunk | Honeybee colony | Fuzzy bees carrying pollen on their legs, wax comb inside |
Honeybees need special handling. A swarm hanging on a branch is usually temporary. It’s a colony resting while scouts look for a new home, and it often moves on within hours to a couple of days. Swarms are generally docile. Don’t spray them. Contact a local beekeeping association, as many beekeepers will collect swarms for free. A colony living inside a tree cavity is more involved, but a beekeeper or bee removal specialist should still be your first call. Our bee nest vs. wasp nest guide can help you tell them apart.
In most cases, no. Hanging paper nests are attached by thin stalks or wrapped around twigs, and they don’t harm the tree. Wasps gather wood fiber for nest paper, but they scrape it from weathered surfaces like dead wood, fences, and decks, not from healthy living bark in any meaningful amount.
There are two exceptions worth knowing:
If you also have nests on your house, our guide to wasp damage to homes and property covers what is and isn’t a real concern.
Not every tree nest needs to go. Wasps are valuable predators that eat caterpillars, flies, and other garden pests, and every tree nest has a built-in expiration date.
In most of the U.S., tree-nesting wasps and hornets have an annual life cycle:
The old nest is not reused the next year. That gray ball you see in a bare tree in December is almost always empty, and birds will often tear it apart over the winter. (Mexican honey wasps in the far South are the main exception.)
This is a common question. A nest 25–30 feet up is usually not bothered by a lawn mower passing underneath. Low nests are different. Vibration, engine noise, and exhaust from mowers, trimmers, and leaf blowers can set off a defensive response, especially from bald-faced hornets in a nest within several feet of the machine. If you can’t avoid working near a low nest, have it dealt with first. Our article on why wasps become aggressive explains what sets them off.
If you’ve decided the nest has to go, the method depends on the nest type and height. Be honest with yourself about the risk. A defensive colony plus a ladder is a dangerous combination.
A small paper wasp comb or an early-season hornet nest that you can reach from the ground is a reasonable DIY job for most adults without sting allergies:
Fruit trees and vegetable gardens: Read the insecticide label carefully. Many wasp sprays aren’t labeled for use on food plants. If the nest is in a fruit tree, wait to harvest until after the label’s waiting period, or have a professional treat it.
If you’d like to avoid chemical sprays, our guide on getting rid of a wasp nest naturally covers lower-toxicity options that work best on small nests.
Hire a pest control professional for any of the following:
Professionals have protective suits, extension poles, and dust applicators. Many will treat and then bag a hornet nest whole so it’s gone in one visit. Our guides on hiring a wasp exterminator and wasp nest removal cost explain what to expect.
Heads up for tree work: If you’re hiring an arborist or tree trimming crew, tell them about any nests you’ve seen. Tree workers are stung often because nests are hidden in the canopy until a saw or chipper disturbs them.
You can’t make trees unattractive to wasps entirely, but a few habits keep nests small and easy to handle:
Our article on how to keep wasps from building nests covers more prevention strategies around your house and yard.
They won’t reuse the old nest, but a new queen may pick the same tree, or one nearby, if it offers good shelter. That’s why spring inspections are worth doing every year.
Generally yes. After several hard frosts, nests in most of the U.S. are empty. Look at it for a few minutes on a mild day to confirm there’s no activity, then knock it down or leave it for the birds. In warm southern climates, colonies can stay active much longer, so check carefully.
Watch the entrance from a safe distance on a warm afternoon for 5–10 minutes. Wasps flying in and out mean it’s active. A nest with torn paper, holes picked by birds, and no traffic is almost certainly abandoned.
Talk to your neighbor first, since they may not know it’s there. Don’t treat a nest on someone else’s property without permission. If the nest overhangs your yard and poses a real hazard, a pest control company can advise on options once both of you agree.
Yes. Storms and high winds sometimes knock nests down. An active nest on the ground still holds a lot of upset wasps, so keep children and pets away and treat it as you would any active nest.
A wasp nest in a tree isn’t automatically a problem. A nest high in the canopy, away from foot traffic, will die off on its own after the first hard frosts and won’t be reused. A low nest near paths, play areas, or shrubs you need to trim is worth removing, ideally early in the season and at night.
First, figure out what you’re looking at: a hornet nest, a paper wasp comb, a hollow-tree colony, or a look-alike like an oak gall or bee swarm. Then decide whether to leave it, handle it yourself from the ground, or call a professional. Whatever you choose, skip the ladder, the hose, and the fire.
This article is for general educational purposes. Always follow the label directions on any insecticide. If you are allergic to stings, or if anyone shows signs of a severe reaction such as trouble breathing, facial swelling, or dizziness after a sting, call 911 immediately. For more, see our wasp sting treatment guide.