Some hornets and hornet-like wasps choose to nest in the ground rather than in trees or on buildings. These insects often use abandoned burrows made by rodents or dig into loose soil to create hidden colonies. From the outside, their nests may appear as small holes in the ground, often with steady movement of insects flying in and out.
Ground-burrowing species still live in organized colonies with a queen and worker system. The queen starts the nest, and workers expand it over time, creating tunnels and chambers beneath the surface. These underground spaces serve as safe areas for raising young and storing food.
The diet of ground-nesting hornets is similar to that of their above-ground relatives. They hunt other insects, which they chew up and feed to their larvae, while adults often consume sugary substances like nectar or ripe fruit. This makes them both predators and occasional visitors to gardens or outdoor eating areas.
One key difference is their defensive behavior. Because their nests are hidden, people or animals may accidentally step near or on the entrance. When disturbed, these hornets can react quickly and aggressively, sometimes emerging in large numbers to defend their colony. This makes them more likely to surprise people compared to visible nests.
Although they can be alarming, ground-burrowing hornets still play a useful ecological role. By controlling insect populations and participating in natural cycles, they contribute to a balanced environment.
Hornets that Nest In the Ground
Oriental Hornet (Vespa orientalis)
One of the few true hornets that consistently nests underground, the Oriental Hornet excavates burrows in soil, embankments, and hillsides across the Middle East, Southern Europe, and Central Asia.
Workers actively dig tunnels that can extend surprisingly deep into the earth, creating multi-chambered nests that protect the colony from temperature extremes. The underground location also makes detection difficult, and unsuspecting people who step near a nest entrance can trigger a sudden and aggressive defensive response from the colony.
Eastern Yellowjacket (Vespula maculifrons)
One of the most commonly encountered ground-nesting “hornets” in North America, the Eastern Yellowjacket builds extensive subterranean nests, often taking advantage of pre-existing cavities such as abandoned rodent burrows.
Colonies can grow to enormous sizes by late summer, sometimes housing tens of thousands of workers. Their nest entrances are small and easily overlooked in lawns and meadows, and accidentally disturbing one — especially with a lawn mower — can provoke a rapid, highly aggressive swarm response that results in numerous stings.
German Yellowjacket (Vespula germanica)
Originally native to Europe, Asia, and North Africa, the German Yellowjacket has become an invasive species in North America, Australia, and New Zealand. It is a highly opportunistic nester that frequently establishes colonies underground in abandoned mammal burrows or soil cavities beneath rocks and tree roots.
Colonies can be exceptionally large and persistent, and in warmer climates they sometimes survive through winter, allowing nests to grow to extraordinary sizes spanning multiple seasons.
Common Yellowjacket (Vespula vulgaris)
Widely distributed across the Northern Hemisphere, the Common Yellowjacket is a ground-nesting species that typically selects soil cavities, compost heaps, or the spaces beneath wooden structures as nesting sites.
It is a highly adaptable forager, feeding on insects, carrion, and sugary food waste, which frequently brings it into conflict with humans at outdoor dining areas. Its underground nests are constructed from chewed wood fiber, forming layered paper combs that can contain thousands of brood cells.
Western Yellowjacket (Vespula pensylvanica)
Found across western North America from Alaska down to Mexico, the Western Yellowjacket is a prolific ground nester that favors dry, sandy, or well-drained soils for colony establishment.
It is particularly notorious in picnic areas and campgrounds, where its aggressive scavenging behavior and readiness to sting make it one of the most bothersome insects of the region. Colonies typically begin in spring with a single overwintered queen and can expand to contain several thousand workers by late summer.
Southern Yellowjacket (Vespula squamosa)
Native to the southeastern United States, the Southern Yellowjacket is a dominant ground-nesting species that exhibits an unusual habit of social parasitism in early colony formation — newly mated queens sometimes take over the nests of other yellowjacket species before establishing their own workforce.
Underground colonies can be massive, and in the warmer southern states, they sometimes persist into winter, resulting in perennial nests of staggering size. Workers are fiercely defensive and will pursue perceived threats over considerable distances.
Prairie Yellowjacket (Vespula atropilosa)
As its name suggests, the Prairie Yellowjacket is found across the open grasslands and prairies of western North America. It is an exclusively ground-nesting species, typically excavating or appropriating burrows in open, undisturbed soil.
It tends to be less abundant than other yellowjacket species but is well adapted to the arid and semi-arid conditions of its habitat range. Like other Vespula species, it is an important predator of caterpillars and other crop-damaging insects, providing meaningful pest control services in agricultural landscapes.
Downy Yellowjacket (Vespula flavopilosa)
The Downy Yellowjacket is a North American species notable for its distinctly fuzzy or downy appearance — a result of fine hairs covering parts of its body — which sets it apart from its more smooth-bodied relatives. It is a ground nester that often builds colonies in forest edges and woodland clearings.
It is also known to exhibit parasitic behavior, with queens sometimes usurping established colonies of closely related species. Its nests are typically smaller than those of the Eastern or German Yellowjacket, but it is no less defensive of its underground home.
Blackjacket (Vespula consobrina)
The Blackjacket is a distinctive North American yellowjacket that departs visually from its yellow-banded relatives — as its name implies, it is predominantly dark, with reduced yellow markings and a largely black appearance. It is a ground-nesting species found across Canada and the northern United States, typically nesting in woodland habitats.
Its colonies tend to be smaller and less aggressive than other yellowjackets, and it is considered one of the less dangerous ground-nesting species to accidentally encounter. It feeds on insects and carrion like other members of its genus.
Cicada Killer (Sphecius speciosus)
The Eastern Cicada Killer is one of the most impressive ground-burrowing wasps in North America, frequently called a “ground hornet” due to its enormous size — females can reach up to 40mm in length. Females excavate elaborate underground tunnels up to 60cm deep, hunting and paralyzing cicadas to stock the burrow as larval food.
Despite their fearsome appearance, they are remarkably docile toward humans — males cannot sting at all, and females rarely do unless directly handled. Multiple females often nest near each other, creating what appear to be communal burrowing sites.
Pacific Cicada Killer (Sphecius convallis)
The western counterpart of the Eastern Cicada Killer, the Pacific Cicada Killer is found along the western coast of North America from British Columbia down into Baja California. Like its eastern relative, it is a solitary burrowing wasp of considerable size that excavates individual tunnels in dry, compacted soils, often in sunny, sparsely vegetated areas.
It hunts cicadas native to its western range and provisions its burrow cells with paralyzed prey. Males are highly territorial around nesting aggregations but are entirely harmless due to their lack of stingers.
European Hornet (Vespa crabro)
While the European Hornet is most commonly associated with nesting in hollow trees and wall cavities, it is also known to excavate nests underground, particularly in areas where suitable above-ground cavities are scarce. It may select the entrance of an old rodent burrow or a sheltered embankment as a nesting site and expand the cavity to accommodate its paper nest.
Underground European Hornet nests can be especially hazardous to encounter due to the species’ highly defensive nature and the considerable size and potency of its colonies.
Great Golden Digger Wasp (Sphex ichneumoneus)
The Great Golden Digger Wasp is a large, striking solitary wasp found across North America that is regularly referred to as a ground hornet by those who encounter it. Females excavate deep, branching burrows in sandy or bare soil and provision them with paralyzed katydids and grasshoppers.
Their golden-orange and black coloration is visually arresting and makes them appear threatening, but they are actually gentle in temperament and very rarely sting humans. They are considered a fascinating example of instinctive burrowing and provisioning behavior in solitary wasps.
Sand Hornet / Sand Wasp (Bembix americana)
The Sand Wasp, commonly called a Sand Hornet across much of North America, is a solitary burrowing species that makes its home in loose, sandy soils, beaches, and sandy riverbanks. Unlike many provisioning wasps that stockpile paralyzed prey before egg-laying, the Sand Wasp progressively provisions its larva with fresh fly prey as it develops — a behavior known as progressive provisioning.
Females are devoted and vigilant nest guardians, frequently circling their burrow entrance. Though capable of stinging, they are not aggressive and pose little threat to careful observers.
Alaska Yellowjacket (Vespula alascensis)
The Alaska Yellowjacket, sometimes treated as a subspecies or close relative of the Common Yellowjacket, is found across the boreal forests and tundra edges of Alaska and northwestern Canada. It is a ground-nesting species well adapted to cooler climates, often establishing colonies beneath the thick layer of leaf litter and moss common to its habitat.
Its colonies are generally smaller than those of species found in temperate zones, reflecting the shorter seasonal window available for colony growth. Despite its remote range, it is the most frequently encountered stinging insect in many parts of subarctic North America.
Horse Guard Wasp (Stictia carolina)
The Horse Guard Wasp, native to the eastern and central United States, earns its evocative common name from its habit of hovering around horses and livestock to catch the biting flies that swarm around them.
It is a solitary ground-nesting species that excavates burrows in dry, sandy soil, provisioning them with paralyzed horse flies and deer flies — making it an unexpectedly valuable ally for farmers and ranchers. Females are fast, powerful fliers and can appear alarming due to their size and darting flight patterns, but they are not aggressive toward humans and rarely sting unless directly restrained.
Note: Many insects commonly referred to as “ground hornets” are technically yellowjackets, digger wasps, or solitary wasps. True hornets (Vespa species) rarely nest underground, though some do. The species below are all popularly called ground hornets or are closely associated with ground-burrowing behavior.