The short version
Around Pasadena, queens start nests in March, and colonies peak in late summer. Small, low paper wasp nests can be handled at dusk. Leave wall, ground and high nests to a pro.
- Treat nests at dusk, when wasps are home.
- Never seal a hole wasps are using.
- Ground and wall nests are best left to a pro.
- Knock down small nests early in spring.
- Call 911 for breathing trouble after a sting.
Anyone in Pasadena dealing with wasps, hornets or yellowjackets at home.
What to look for
Near a door or deck, stings will happen. Late-summer colonies are big and quick to sting. Wasps defend the area around their nest.
- 1Sudden wasp interest in overripe fruit under a tree.
- 2Steady wasp traffic in and out of one soffit gap.
- 3Open umbrella-shaped comb under a porch ceiling or railing.
- 4Wasps appearing indoors near light fixtures or windows.
- 5Wasps entering an attic vent, dryer vent or weep hole.
- 6Wasps clustered at a hummingbird feeder or ripe grapes.
Why it’s worth acting soon
- Nests grow all summer.
- Ground nests get disturbed by mowing.
- Wall nests can chew through into rooms.
- Stings are dangerous for anyone allergic.
Treatment options and typical costs
Inspection and Nest Identification
$75–$200
Expect a pro to check eaves, vents, sheds and the ground. Multiple nests are common late in the season.
- Time
- 45–75 minutes
- Best for
- Every job; species and nest location decide the method
Preventive Spring Treatment and Follow-Up
$150–$400
Prevention won't stop every nest, and no honest company in Pasadena will say it does. It cuts the odds and catches nests that start early.
- Time
- 45–90 minutes
- Best for
- Homes with repeat nests or a sting allergy in the household
Aerial Nest Treatment and Removal
$100–$400
Bald-faced hornet nests, the grey football-shaped ones, defend aggressively and are best left to a Pasadena professional with a bee suit and a long-reach applicator. Small paper wasp combs are a simpler job.
- Time
- 30–90 minutes
- Best for
- Exposed paper wasp, hornet and bald-faced hornet nests
Sealing Up After the Nest Is Dead
$150–$450
Sealing is priced by the number and size of openings. One gap is quick; a row of open vents takes longer.
- Time
- 1–2 hours
- Best for
- Closing soffits, vents and gaps once a void nest is dead
Prices are typical published ranges. Ask what’s included before you compare quotes.
In cold-winter areas, old nests are empty by now. It's a good time to fix vent covers and siding gaps before queens go looking in spring.Which wasps live around Pasadena.
Bald-faced hornets build big gray nests in trees and eaves. In mild winters around Pasadena, some yellowjacket nests survive and grow huge. Leave those to a pro. Mud daubers build tube-shaped mud nests. They rarely sting. Paper wasps are the most common around Pasadena. They build open, umbrella-shaped combs under eaves and railings. Eastern yellowjackets nest in the ground and in wall voids. They cause most stings.
Local wasps conditions in Pasadena.
An inspection in Pasadena usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing Pasadena's seasonal timing lets you schedule treatment before the busy stretch rather than after it, which usually means faster service and a more accurate quote. A provider who works Pasadena and Texas every day can point out the specific conditions that matter most here, and getting the scope, price, and follow-up terms in writing makes it easier to compare options. Pasadena sits in a local climate, and that sets the pace for wasp activity here: the warmer months. The area is mostly residential, so wasps pressure can differ from one block to the next depending on how tight the entry points are and how much food, water, or shelter is close by.
An unscreened foundation vent is an easy way in for a yellowjacket queen. Wasps flying in and out of a vent all day are a sign of a nest inside.When they’re most active.
Nests die back with the first hard freeze, around November. Early spring is the easiest time to remove small starts.
Where they nest around houses here.
Watch for wasps flying in and out of a gap. A ground nest looks like wasps streaming from one hole. Homes from Pasadena out to Houston and Galveston share the same favorite nest spots. Many homes in Pasadena sit on slabs, so check eaves, the garage and patio covers first. Look under railings, play sets and grills.
A year of wasps in Pasadena.
- Summer: highs near 95°F in Pasadena help colonies grow fast. - Late summer: peak season. Workers hunt sweets near people. - Winter: lows near 44°F in Pasadena. Some nests keep going. - Spring: queens start new nests around March. Knock down small starts.
Wasp, hornet or bee?
- Yellowjacket: bright yellow and black, nests in the ground. - Hornet: larger, with a big closed paper nest. - Mud dauber: thin waist, mud tube nests. Rarely stings. - Honey bee: fuzzy and golden. about relocation. - Paper wasp: slim, long legs, open comb.
If you get stung.
An antihistamine can ease itching and swelling. 911 for trouble breathing or a swollen face or throat. If someone carries an epinephrine pen, use it. Move away from the nest first. Wash the sting and use a cold pack.
Keeping wasps away from the patio.
- Trash: keep lids tight and bins away from doors. - Fruit: pick up fallen fruit. - Spring checks: knock down small nests early. - Gaps: seal gaps after a nest is gone. - Food: cover plates and drinks outdoors.
Ground nests: what to do.
Don't mow over it. Don't pour gasoline or water in. Pros treat ground nests at night, when the colony is home. Mark the hole with a flag. Keep kids and pets away.
A nest, or just visitors?
Watch at dusk, when they fly home. Follow the line back to an eave, vent, shrub or hole. Wasps on flowers or trash cans may come from far away. A nest shows steady traffic to one spot.
Treating a small nest yourself, safely.
- Never if anyone in the house is allergic. - Wait until dusk, when wasps are home and slow. - Wear long sleeves, pants and gloves. - Use a jet wasp spray from several feet away. - Never spray from a ladder. - Leave it overnight, then bag the nest. - Only if it’s small, low and out in the open.
Wasps and pets.
your vet if the throat swells or breathing changes. Keep pet food and water bowls indoors in late summer. Dogs often snap at wasps and get stung on the face. Most stings just swell a little.
Kids and wasps.
Check play sets, slides and playhouses for nests each spring. Use cups with lids for sweet drinks outside. Teach kids to walk away calmly. Swatting makes a sting more likely.
After the nest is gone.
Check nearby eaves for new starts. Knock down small new nests early next spring. Wasps don't reuse old nests. Seal the gap a wall nest used once it's quiet.
Wasps at picnics and barbecues.
- Food: keep it covered until you eat. - Trash: bag scraps and close the bin. - Calm: don’t swat; slowly move away. - Kids: teach them to walk away calmly. - Drinks: use cups with lids or straws.
Ground nests in the lawn.
Watch for wasps flying in and out of the grass. Mark it, and keep mowers and kids away until it's treated. Yellowjackets often nest in old rodent holes.
Questions to ask before you sign.
- How will you treat a nest inside the wall? - Is removal of the dead nest included? - Is a return visit included? - What kind of wasp is it?
What affects the price
- After-hours, weekend or emergency scheduling.
- Sting allergy in the home requiring extra precautions.
- Colony size, which climbs sharply from June to September.
- Number of nests found on the property.
- Sealing gaps after the nest is dead.
- Whether nest removal is included after treatment.
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What's your biggest concern about wasps?
When to call for help
Call for nests in walls, attics, the ground, or anywhere high. right away if anyone in the house is allergic. Don't seal a hole wasps are using. They'll find another way in.
What you can do yourself
A small, reachable paper wasp nest is a fair DIY job. Spray it at dusk with a wasp aerosol. Knock it down the next day. Big, high or hidden nests are a job for a pro.
Wasps in Pasadena
With summer highs near 95°F in Pasadena, colonies grow fast and are biggest by August. Winter lows near 44°F in Pasadena are mild, so some yellowjacket nests survive the winter and keep growing. In denser parts of Pasadena, nests turn up in eaves, balconies, signs and wall gaps.
Local research
Wasps in Pasadena, TX: what the public record shows
Before you compare quotes, it helps to know which wasps actually live in Texas, when they are busiest around Pasadena, and what the state figures look like. Everything below links to the agency or university page it came from.
Perennial southern yellowjacket nest size reported in Texas and other southern states
Multi-year colonies in wall voids or ground are a professional-only removal.
Texas A&M AgriLife ExtensionCicada killer body length (Texas A&M)
The huge summer wasp digging in lawns is nearly harmless and is not a hornet.
Texas A&M AgriLife ExtensionWasp species recorded in Texas
- Eastern yellowjacket (Vespula maculifrons) — UF/IFAS lists it with the southern yellowjacket as Florida's two yellowjackets; OSU lists it for Ohio; Texas A&M notes it is 'generally found in eastern Texas'. Ground nests 9.5…
- Southern yellowjacket (Vespula squamosa) — Texas A&M: 'Colonies can contain up to 4,000 workers', 'In Texas, some colonies can survive for several years and continue to grow', and southern colonies '6 ft across' have bee…
- Bald-faced hornet (Dolichovespula maculata) — Penn State: 'found in most of the 48 contiguous states and D.C., throughout Canada and in Alaska'; actually an aerial yellowjacket that builds the football-shaped gray paper nes…
- Native paper wasps (Polistes spp. (e.g., P. fuscatus, P. apachus, P. exclamans)) — Open umbrella-shaped nests under eaves, porch ceilings and railings. UC IPM: paper wasp colonies 'vary between 15 to 200 individuals'; Penn State: queens 'establish nests in May…
When wasps are busiest around Pasadena
Texas A&M: 'In Texas, some colonies can survive for several years and continue to grow'; reproductive cells are built 'Late in the summer'. Cicada killers are 'One of the signs of summer in Texas'.
Southern yellowjacket nests 'are most often underground, but occasionally are found in wall voids and indoors' (Texas A&M). Eastern yellowjacket is 'generally found in eastern Texas'.
Rules that apply in Texas
For context, nationally
- 788 — Deaths from hornet, wasp, and bee stings, 2011–2021 (US). CDC MMWR
- 72 deaths per year — Average annual sting deaths, 2011–2021 (US). CDC MMWR
Sources: Southern Yellowjackets - Field Guide to Common Texas Insects; Texas A&M AgriLife Extension; CDC MMWR; Yellowjackets and Hornets, Vespula and Dolichovespula spp. (Insecta: Hymenoptera: Vespidae); Baldfaced Hornet; Yellowjackets and Other Social Wasps (Pest Notes). Figures are quoted as the source prints them. How we check our sources
Simple ways to keep wasps away
- Pick up fallen fruit under trees promptly.
- Check sheds and garages for nests each May.
- Inspect grills, mailboxes and light fixtures before use.
- Caulk around cable, gas and conduit entry points.
- Hang wasp traps at the yard edge, not the patio.
Jot down where nests turned up this year. Queens often pick the same eaves and gaps, so you'll know where to look first next spring.Did you know?
A bald-faced hornet is actually a yellowjacket, not a true hornet
Some paper wasps can tell their nestmates apart by their faces
Questions people ask
Are wasps good for anything?
Yes. They eat caterpillars and other pests. Leave nests that are well away from people.
How long does wasp nest removal take?
Usually under an hour. Hidden nests may need a second visit a few days later.
Can wasps damage my house?
Rarely by much. Yellowjackets in walls can chew through drywall. Carpenter bees do more wood damage.
Can I just leave the nest alone until winter?
If it's out of the way, often yes. Around Pasadena, nests die back with the first hard freeze, around November.
Should I be worried about a nest in the ground?
Yes, if it's near a path or play area. Ground nests are usually yellowjackets. Mowing over them sets them off.
Do wasp traps actually work?
They catch some foragers but rarely solve a nest problem. Find and treat the nest itself.
When is wasp season in Pasadena?
Around Pasadena, queens start nests in March, and colonies peak in late summer. Nests die back with the first hard freeze, around November.
Are hornets common in Pasadena?
Bald-faced hornets are, in trees and on eaves. Most stings come from yellowjackets, though.
Sources (4)
The facts in this article come from the public sources listed above. Every home is different, so ask the company you talk to about pricing and what’s included. Published by Wasp Exterminator · Updated September 11, 2026 · How we write these guides