North Carolina is home to at least eight common stinging insects, ranging from familiar backyard visitors like paper wasps and honeybees to more intimidating species like European hornets and velvet ants. Knowing which ones you’re likely to encounter, where they nest, and when they’re most active can help you avoid painful stings and handle nests safely.
Yellowjackets
Yellowjackets are the most aggressive stinging insects you’ll encounter in North Carolina. They’re compact wasps with bold yellow and black striping, and unlike honeybees, they can sting repeatedly. A single queen starts a nest alone in spring, and by fall that colony may hold 600 to 800 workers. Nests are often built underground in old rodent burrows, making them easy to stumble over while mowing or walking through the yard. They also nest in wall voids, tree stumps, and shrubs.
Yellowjackets become especially aggressive in late summer and early fall, when colonies are at peak size and workers are competing for food. This is when you’re most likely to be stung near trash cans, outdoor meals, or sugary drinks. By winter, the workers die off and the nest is abandoned. Future queens overwinter alone under tree bark, in rotting stumps, or sometimes in attics, then emerge in spring to start the cycle again.
Paper Wasps
Paper wasps are slender, long-legged wasps that build the familiar open-celled, umbrella-shaped nests you find under eaves, window sills, awnings, deck railings, and barn overhangs. In spring, a single queen constructs the nest from a grey, papery material. Through spring and summer, the colony grows to several dozen wasps, with the nest reaching 6 to 8 inches across.
Paper wasps are less aggressive than yellowjackets and generally only sting when their nest is directly disturbed. They’re still a concern in high-traffic spots like doorways and porches. In early fall, colonies produce new queens, which mate and then leave to find sheltered overwintering spots. On warm winter days, dormant queens can become temporarily active, which catches some homeowners off guard.
Baldfaced Hornets
Despite the name, baldfaced hornets are actually large wasps closely related to yellowjackets. They’re black with distinctive white markings on the face and abdomen. Their nests are the large, grey, football-shaped structures you see hanging in trees, sometimes growing bigger than a basketball. Inside, the nest is built in stacked layers of comb surrounded by several layers of papery outer shell, with the entrance hole near the bottom.
Baldfaced hornets can be very aggressive if you get close to their nest. A colony built high in a tree is usually best left alone, since it will die out naturally in late fall. The nest deteriorates over winter from weather and birds picking it apart.
European Hornets
European hornets are the only true hornets in North Carolina. They’re noticeably larger than yellowjackets, with brown and yellow coloring. Queens emerge from hibernation in spring and build nests in sheltered spots like hollow trees, wall voids, and attics. Colonies can grow to 300 to 500 workers, occasionally reaching 1,000. They produce new queens and males well into fall before the workers die off and the nest is abandoned.
One unusual trait: European hornets are active at night and are attracted to porch lights and lit windows, which sets them apart from most other stinging wasps in the state.
Bees: Honeybees, Bumblebees, and Carpenter Bees
Honeybees are social hive-dwellers and important pollinators. They can sting, but the barbed stinger pulls free from the bee’s body after one sting, killing it. That makes honeybees far less likely to sting unprovoked than wasps or hornets. You’ll find them in gardens and anywhere flowers are blooming.
Bumblebees are large, round, and fuzzy. Queens emerge in spring to find nesting sites, often in abandoned rodent holes, brush piles, or thick grass. By midsummer, a colony typically has 20 to 100 workers. They’re generally docile and only sting if handled or if their nest is directly threatened.
Carpenter bees emerge in April and May in North Carolina. They look similar to bumblebees but have a shiny, hairless abdomen. Males are territorial and will hover aggressively near your face, but they can’t sting. Females can sting but rarely do. The real concern with carpenter bees is structural: they bore perfectly round tunnels into unpainted or weathered wood to lay their eggs, and over years, repeated nesting can weaken decks, fascia boards, and other wooden structures.
Fire Ants
Red imported fire ants are small, reddish-brown ants that build dome-shaped mounds in lawns, parks, and garden beds. They’re widespread across North Carolina, especially in the Piedmont and Coastal Plain. When their mound is disturbed, workers swarm out rapidly and deliver multiple painful stings. Each sting produces a burning sensation followed by a small, fluid-filled blister that takes several days to heal. Fire ants are a particular hazard for children and anyone who can’t move quickly away from a mound.
Velvet Ants (Cow Killers)
Velvet ants aren’t actually ants. They’re solitary wasps whose wingless females look like large, furry ants covered in bright orange or red and black hair. You’ll see them scurrying across open ground, sandy areas, and lawns, especially in summer. Females have an exceptionally long stinger and deliver one of the most painful stings of any insect in the eastern United States. The common name “cow killer” comes from folklore claiming the sting is powerful enough to kill a cow. It won’t, but it’s memorable.
Velvet ants are not aggressive and only sting when stepped on or picked up. They don’t form colonies and don’t build nests you need to remove. The simplest strategy is to wear shoes outdoors and leave them alone.
Cicada Killers
Cicada killers are solitary wasps that look terrifying but pose very little threat to people. They’re among the largest wasps in North Carolina, reaching about two inches long, with yellow and black markings. They emerge between June and July, and females dig burrows in sandy, well-drained soil to lay eggs. Each burrow is stocked with paralyzed cicadas as food for the developing larva.
Males are territorial and may buzz close to you, but they have no stinger. Females can sting but almost never do unless grabbed. If you see large wasps hovering over bare patches of lawn in midsummer, they’re almost certainly cicada killers, and they’re best left alone.
When Stinging Insects Are Most Active
Stinging insect season in North Carolina follows a predictable arc. Queens of social species (yellowjackets, paper wasps, hornets, bumblebees) emerge in spring and begin building nests with just a few workers. Colonies grow steadily through summer. Peak activity and peak aggression hit in late summer and early fall, roughly August through October, when colonies are at their largest and workers are foraging intensively for food. By late fall and early winter, colonies die off. Only mated queens survive, tucked into sheltered hiding spots until the following spring.
Carpenter bees are most visible in April and May. Cicada killers show up in June and July. Fire ants are active year-round in mild weather but are most problematic from spring through fall.
Sting Reactions: Mild to Severe
Most stings cause instant, sharp burning pain followed by a raised welt and localized swelling that resolves within a few hours. Some people have a moderate reaction with redness, swelling, and itching that worsens over one to two days and can linger for up to a week. This is unpleasant but not dangerous.
A small percentage of people develop anaphylaxis, a severe allergic reaction that typically begins within 15 minutes to an hour after the sting. Warning signs include a spreading rash or hives, swelling of the tongue or throat, difficulty breathing or swallowing, and tightness in the chest. Anaphylaxis is a medical emergency. If you’ve had a severe reaction to a sting before, carrying prescribed epinephrine is essential any time you’re outdoors during stinging insect season.
Dealing With Nests Safely
Not every nest needs to be destroyed. A yellowjacket nest in an out-of-the-way corner of the yard or a hornet nest high in a tree will die off on its own by late fall. If you can avoid the area for a few months, that’s the simplest solution.
Nests near doorways, walkways, play areas, or anywhere people are regularly passing by are a different story. For ground-nesting yellowjackets, the most effective approach is applying an aerosol wasp and hornet spray directly into the nest entrance at dusk, when most workers are inside and less active. These products spray a stream 10 to 12 feet, letting you keep your distance. For aerial nests on eaves or low branches, the same sprays work well. Approach slowly, spray the opening thoroughly, and leave the area immediately.
Large nests, nests inside wall voids, or nests belonging to someone with a known venom allergy are best handled by a licensed pest control professional. Disturbing a large yellowjacket or hornet colony without proper equipment can result in dozens of stings in seconds.