Which wasps show up around Greensboro homes?
Four groups cover almost everything you will find here. Native paper wasps build the small open umbrella combs under porch ceilings, deck rails, and window trim, and Penn State notes the introduced European paper wasp is less common in the Southeast, so the ones on your porch are likely natives. Bald-faced hornets build the enclosed gray spheres, and Penn State places their range across most of the contiguous states. European hornets are the third, established across the eastern United States, nesting in hollow trees and wall voids and flying at night. Yellowjackets are the fourth and the one that causes the most trouble, because they nest underground and inside walls where nothing shows. Identification matters because it sets the plan. An open comb is treatable at night from the ground with an aerosol. An enclosed hornet nest needs distance and equipment. A hidden yellowjacket colony needs the entrance found first, then dust rather than spray, then a return visit before anything is sealed. Getting the species wrong usually means picking the wrong method entirely.
A month-by-month wasp timeline for the Piedmont
April and May: Clemson describes colonies starting when the overwintered queen emerges. She builds a small comb and raises the first workers alone. This is the cheapest and safest month to deal with anything you find. June and July: workers take over foraging and the queen settles into laying. Colonies grow steadily and stay focused on hunting insects, so they are easy to ignore. This is the right stretch for screening vents and sealing trim gaps. August: Clemson notes colonies may reach several hundred workers by this point. Numbers are high and foragers begin turning toward sugar. September and October: peak. Auburn Extension calls the end of summer and fall the peak yellowjacket season in the Southeast. Colonies are large, defensive, and highly visible around food and trash. November onward: cold nights end most colonies. New queens have already left to overwinter. Old nests are empty and will not be reused.
Do wasp nests here ever get truly enormous?
It comes up every year, usually after someone shares a photo of a nest the size of a chest freezer. The short answer for Greensboro is that this is not the normal pattern, but the underlying phenomenon is real. Texas A&M reports that in Texas some southern yellowjacket colonies survive several years and continue to grow, and that colonies in Texas and other southern states have been reported at six feet across. That happens where winters are mild enough that the colony never gets killed off and multiple queens keep laying, so a nest that would normally end in November simply keeps going. Greensboro sits north and higher than that zone, at 838 feet with average winter lows around 30F, and freezing nights normally end the annual cycle. The practical takeaway is not to panic about super nests, but to take a large late-season nest seriously on its own terms: several hundred workers in a wall or a bank is plenty of trouble without needing to be a record breaker.
What does a first visit look like?
Expect a walkthrough of the whole property before any product comes out. Paper wasps often build several combs on one house, so treating the one you called about and leaving three others is a wasted trip. The checklist is predictable: porch ceilings, deck framing, window ledges, soffit and gable vents, crawlspace openings, hollow columns, dense shrubs, and the ground along foundations and beds. If the nest is hidden, part of the visit is watching rather than treating. Finding the actual entrance means standing back and tracking flight lines, sometimes at a particular time of day when the light works. Timing should come up unprompted. Anyone planning to treat a full colony at midday is describing an incomplete job, because a large share of the workers are out foraging. Ask what happens if wasps are still active a week later, whether that return visit costs extra, and whether the entry point gets sealed or just sprayed. Those are four separate pieces of work and they get bundled differently.
Renters, landlords, and who handles the nest
A nest attached to the building is normally the owner's responsibility rather than the tenant's, because it involves the structure and not housekeeping. If you rent in Greensboro, report it in writing the day you see it, with a photo and a specific location, and keep a copy. A dated record is what makes the timeline clear if the repair drags on. Ask about sealing specifically, not just treatment. In a climate where the season runs from April into October, an unsealed soffit gap is an open invitation to next year's queen, and repeat nesting in the same corner is the usual result. Landlords have their own case for moving quickly. A yellowjacket colony in a wall can soak insulation and stain drywall, and a nest at a shared entry or stairwell exposes every tenant and anyone making a delivery. For multi-unit properties, treat the building exterior as one job. A single cavity often runs behind more than one unit, and treating one side just redirects the traffic.
Stings, allergies, and when to go to the hospital
Most people who get stung experience sharp pain, a red welt, and swelling that fades within a day. Ice and an antihistamine cover it. What matters is recognizing the small share of reactions that are not like that. Go to 911 immediately for hives spreading away from the sting site, swelling of the lips, tongue, or throat, dizziness, or any breathing difficulty. Those are systemic reactions and they can move fast. Many stings at once from a disturbed ground or hornet nest deserve medical attention even without an allergy history, purely from the venom load. The scale is worth knowing. The American College of Allergy, Asthma and Immunology puts potentially life-threatening reactions to insect venom at 0.4 to 0.8 percent of children and about 3 percent of adults, and the University of Kentucky estimates roughly two million Americans are hypersensitive to stinging insect venom. If that includes someone in your home, talk to a doctor about carrying epinephrine and let somebody else deal with the nest.