Georgia is home to dozens of wasp species, from tiny parasitic wasps you’ll never notice to large, colony-building yellowjackets and paper wasps that make their presence very well known. The most common wasps you’re likely to encounter belong to three groups: paper wasps, yellowjackets, and hornets, all in the family Vespidae. Understanding which species you’re dealing with, when they’re most active, and how to handle them safely makes a real difference in how you navigate your yard from spring through fall.
Paper Wasps
Paper wasps (genus Polistes) are the ones you’ll see building small, open-comb nests under eaves, porch ceilings, deck railings, and mailboxes. Their nests look like upside-down umbrellas with visible hexagonal cells. The wasps themselves are slender with long legs that dangle visibly during flight, and they range from reddish-brown to dark brown with yellow markings depending on the species.
Paper wasps are generally the least aggressive of Georgia’s social wasps, especially early in the season when the colony is small. They spend most of their time hunting caterpillars and other soft-bodied insects to feed their larvae, which actually makes them useful garden predators. That said, they will sting if you get too close to their nest, and they become noticeably more defensive as summer progresses and the colony grows. Unlike bees, paper wasps don’t lose their stinger after stinging, so a single wasp can sting you more than once.
Yellowjackets
Yellowjackets (genus Vespula) are stockier than paper wasps, with bold black-and-yellow banding and a faster, more erratic flight pattern. They’re also significantly more aggressive. Georgia is home to the southern yellowjacket, which normally nests underground but will sometimes build nests in above-ground voids like wall cavities, ceiling insulation, or gaps between stacked hay bales.
The underground nesting habit is what makes yellowjackets so problematic. You often discover a nest by accidentally stepping on it or running a lawnmower over it, which triggers an immediate swarm response. A mature colony can contain over a thousand workers by late summer, and disturbing a nest that size is a serious situation. Yellowjackets are also the wasps most likely to show up at your outdoor meals. They’re attracted to sugary drinks, fruit, and meat, and they become especially persistent scavengers in late summer and early fall as natural food sources decline.
Hornets in Georgia
Two hornet species are common in the state: the European hornet and the bald-faced hornet.
European hornets are Georgia’s largest social wasps. Workers measure about an inch long, and queens reach 1.3 inches. They have black and yellow abdominal stripes with distinctive teardrop-shaped markings, while their heads are hairy and reddish-brown, fading to yellowish-brown on the face. European hornets prefer to build nests in dark, sheltered spaces: hollow trees, barn lofts, attics, and wall voids near wooded areas. From the outside, the nest looks like a gray paper covering made from chewed wood fibers, and a finished nest by fall contains six to eight internal combs. They’re not typically aggressive away from the nest but will defend it vigorously if they sense a threat. Their stings are notably painful and can cause severe allergic reactions in sensitive individuals.
Bald-faced hornets are actually a type of yellowjacket despite the name. They’re black with white facial markings and build the large, football-shaped paper nests you sometimes spot hanging from tree branches or under roof overhangs. These nests are fully enclosed, unlike the open combs of paper wasps, and can grow to the size of a basketball by late summer. Bald-faced hornets are highly defensive of their nests and will pursue perceived threats over a considerable distance.
Solitary Wasps Worth Knowing
Not every wasp in Georgia lives in a colony. Solitary species like cicada killers and flower wasps are common and almost never a threat to people. Flower wasps (family Tiphiidae) are particularly abundant in orchards and gardens, where they parasitize beetle grubs in the soil. Cicada killers are impressively large, sometimes over an inch and a half, but despite their intimidating size they’re docile toward humans. Females dig individual burrows in sandy or loose soil, provision each chamber with a paralyzed cicada, and lay a single egg on it.
The vast majority of Georgia’s wasp species fall into the “couldn’t care less about you” category. Most are tiny parasitic wasps that lay eggs in or on other insects, playing an enormous role in keeping pest populations in check. If you see a small wasp hovering near plants and ignoring you entirely, it’s almost certainly one of these beneficial species.
When Wasps Are Most Active
Georgia’s warm climate gives wasps a long season. Queens emerge from hibernation in early spring, typically March or April, and immediately begin building new nests and laying eggs. Through spring and early summer, colonies are small and relatively docile. This is the easiest window to remove a problem nest, when it may contain only a queen and a handful of workers.
Colony populations peak in late summer, roughly August through September, which is when wasps are at their most numerous and most aggressive. This late-season aggression isn’t random. The colony is at maximum size, it’s producing the next generation of queens and males, and workers are competing for dwindling food. By late fall, most colonies die off naturally. New queens fly away to find sheltered spots to hibernate through winter, and the old nest is abandoned. In rare cases, particularly in Georgia’s milder southern counties, a nest can survive winter and skip the rebuilding phase entirely, giving it a head start the following spring.
What to Do About a Sting
Wasps don’t typically leave a stinger behind, so there’s nothing to scrape or pull out. Wash the area with soap and water, then apply an ice pack wrapped in a cloth for about 15 minutes. Over-the-counter pain relievers and antihistamine tablets can help with pain and itching. Most stings resolve within a few hours to a couple of days with localized swelling and discomfort.
A small percentage of people develop a severe allergic reaction called anaphylaxis, which is a medical emergency. Warning signs include difficulty breathing, a swollen tongue or throat, wheezing, voice changes, persistent coughing, dizziness, abdominal pain, vomiting, or collapse. If you or someone nearby shows any of these symptoms after a sting, use an epinephrine auto-injector if available and call 911 immediately. People who have had a systemic reaction to a wasp sting in the past should carry an auto-injector during wasp season.
Managing Nests Around Your Home
The timing of your response matters more than almost anything else. A paper wasp nest discovered in April or May with a lone queen and a few cells can often be knocked down with a long stick or a blast of water from a garden hose, ideally in the evening when the wasps are less active. A yellowjacket nest discovered in August with a thousand workers inside is a fundamentally different situation that typically calls for professional removal.
Prevention is the most practical approach. In early spring, check eaves, porch ceilings, shutters, and other sheltered spots for the beginnings of new nests. Seal gaps in exterior walls, soffits, and foundations where yellowjackets or European hornets might establish nests in voids. Keep outdoor garbage cans tightly lidded, and avoid leaving sugary drinks or food uncovered during cookouts, especially from mid-summer onward when yellowjackets are actively scavenging.
For ground-nesting yellowjackets, the nest entrance is usually a small hole in the soil with a steady stream of wasps flying in and out. Mark the location and avoid the area until you can deal with it. Attempting to flood the nest with water or plug the entrance rarely works and often makes things worse. If the nest is in a high-traffic part of your yard, professional treatment at dusk, when the full colony is inside, is the safest option.