It started the way most farm stories do: I wasn’t looking for it. I was out shooting the hives and meadows at Chesterhaven Beach Farm, camera in hand, when I noticed something tense unfolding on the landing board of one of our colonies. A large wasp had touched down among the bees, and the bees had clearly noticed. I stopped, steadied the lens, and watched one of the oldest rivalries in nature play out a few feet in front of me: hornets versus honey bees, live on the Eastern Shore.
If you keep bees long enough, you learn that the hive is never as peaceful as it looks from the outside. A healthy colony is a fortress with thousands of defenders, and wasps and hornets are the uninvited guests that test those defenses all season long. Here is what I saw that afternoon, what is actually happening when bees and wasps tangle, and which predators Maryland beekeepers should keep an eye on (spoiler: the terrifying ones you have read about in the news are not among them).
What Landed on My Hive: Wasp, Hornet, or Something Else?
The first thing worth clearing up is vocabulary, because “wasp,” “hornet,” and “yellowjacket” get used interchangeably, and they are not the same insect. Hornets are simply a particular group of large wasps. According to the University of Maryland Extension, only two true social wasps regularly hunt around honey bee hives in our region: the European hornet and the bald-faced hornet (which, confusingly, is technically a type of yellowjacket, not a true hornet at all). Yellowjackets round out the cast, especially in late summer and fall when natural food gets scarce.
The visitor on my landing board was a paper wasp, slender and long-legged. Paper wasps are mostly beneficial insects: they hunt caterpillars and other soft-bodied pests, and they are not aggressive raiders of strong hives. A lone wasp on a hive is usually scouting for an easy meal, whether that is a stray bee or a taste of our honey. A strong colony almost always sends it packing, which is exactly what mine set out to do.
Why Wasps and Hornets Bother Bees at All
Wasps come to the hive for two reasons: protein and sugar. Honey bees are protein, and honey is sugar. Most of the year, a populous colony with plenty of guard bees can shrug off the occasional intruder. The danger window opens in late summer and early fall, when wasp colonies peak in number, wild food dwindles, and a weak or under-defended hive starts to look like an unguarded pantry.
This is why beekeepers talk about “robbing” season. A struggling colony, a hive with too large an entrance, or sloppy feeding that leaves syrup exposed can all invite trouble, not just from wasps but from neighboring honey bees too. The single best defense is the one you build before any wasp shows up: a strong, populous colony with a queen laying well. If you are heading into the cooler months, our guide on what bees do in winter walks through how a healthy colony tightens up its defenses as the season turns.
Hornets Versus Honey Bees: How the Fight Actually Works
Here is the part that surprises people. When honey bees take on a wasp or hornet, they usually do not win with their stingers. A hornet’s armored exoskeleton shrugs off most bee stings, so the bees fall back on a stranger and far more effective tactic: they pile on, smother, and overheat the intruder all at once.
It happens fast. On my hive, the wasp landed and began walking the board as if it owned the place. Within about a minute, a guard bee charged it and knocked it flat. From there, more bees swarmed in and mobbed the wasp into a writhing knot of bodies. I did not stay to watch the finish, because right about then the girls in a neighboring hive started swarming and stole my attention, but the wasp’s outcome was not in doubt.
Two Ways Bees Kill an Intruder
Scientists have documented two distinct versions of this mobbing behavior, and they are easy to mix up:
Heat balling. The most famous version comes from the Japanese honey bee (Apis cerana japonica), which surrounds a giant hornet in a tight ball and vibrates its flight muscles to crank up the temperature. Researchers have measured the core of these “hot defensive bee balls” reaching roughly 46°C (about 115°F), hot enough to be lethal to the hornet but just survivable for the bees, with carbon dioxide building up inside the ball to help finish the job. It can take 30 to 60 minutes, and it is one of the most remarkable defenses in the insect world.
Smother balling. The second version is about suffocation rather than heat. Cyprian honey bees, studied because their local Oriental hornet tolerates high temperatures, were shown in Current Biology to mob the hornet’s abdomen and physically block the small breathing openings, called spiracles, that the hornet needs to pump air. Pinned and unable to breathe, the hornet asphyxiates. This is closer to what I watched on my own landing board: a pile of bees holding an intruder down until it could not move or breathe.
It is genuinely a team sport. No single bee could manage any of this. It takes dozens to hundreds of workers acting together, the same kind of coordinated, collective effort that runs through everything bees do. If that idea fascinates you, our piece on hive mentality and the wisdom of the colony is a nice companion read.
Are “Murder Hornets” a Threat to Maryland Bees?
If you remember the “murder hornet” headlines from a few years back, here is the reassuring update. That insect, the northern giant hornet (Vespa mandarinia, once called the Asian giant hornet), turned up in Washington State in 2019. After a multi-year trapping and eradication effort, the Washington State Department of Agriculture and the USDA declared it eradicated from Washington and the United States in December 2024, following three years with no confirmed detections.
It is worth being clear about why that mattered. Northern giant hornets are the species capable of the truly devastating raids, where a few dozen hornets can wipe out a colony of tens of thousands in a matter of hours. One often-cited figure puts a single giant hornet’s killing rate at around 40 bees per minute during such an attack, a number that comes from this giant species, not the paper wasp that visited my farm. The everyday wasps and hornets a Maryland beekeeper actually encounters are nuisances, not colony-enders, and a strong hive handles them on its own.
What This Means for Your Hives (and Your Honey)
The practical takeaways from one afternoon of insect drama are simple. Keep your colonies strong and populous, because population is defense. Use an entrance reducer on smaller or weaker hives heading into late summer so there is less doorway to guard. Avoid open feeding that triggers robbing frenzies, and learn to tell apart a true wasp raid from ordinary honey bee robbing so you respond to the right problem.
Mostly, though, days like this are a reminder of how much is happening inside a hive that we never see. Every jar of our Eastern Shore honey is the product of a colony that spends its whole life defending itself, feeding itself, and somehow still finding time to turn our meadows into something delicious. Speaking of those meadows: the fields here are just coming into bloom, and by midsummer the whole farm will be humming. I’ll keep the camera handy.
FAQs About Hornets Versus Honey Bees
Do honey bees kill hornets and wasps?
Yes. A strong honey bee colony can kill an intruding wasp or hornet, but usually not by stinging it. The bees mob the intruder in a tight ball and kill it by a combination of smothering and overheating, since a hornet’s hard exoskeleton resists most bee stings.
How do honey bees kill a hornet without stinging it?
They use coordinated mobbing. In some honey bee species, workers form a “hot defensive bee ball” and vibrate their flight muscles to raise the temperature to lethal levels. In others, the bees pile onto the hornet’s abdomen and block the breathing openings it needs to take in air, causing it to suffocate.
What is the difference between a wasp, a hornet, and a yellowjacket?
Hornets are a group of large wasps, so all hornets are wasps but not all wasps are hornets. Yellowjackets are a separate group of smaller wasps. Confusingly, the common bald-faced hornet is actually a type of yellowjacket rather than a true hornet.
Which hornets threaten honey bees in Maryland?
According to the University of Maryland Extension, the European hornet and the bald-faced hornet are the social wasps most likely to be seen around hives in Maryland, along with yellowjackets. For a healthy, populous colony these are nuisances rather than serious threats.
Are murder hornets still a danger to bees in the United States?
The northern giant hornet, nicknamed the “murder hornet,” was declared eradicated from the United States by the USDA and the Washington State Department of Agriculture in December 2024 after three years with no confirmed sightings. It was only ever found in the Pacific Northwest and was never established on the East Coast.
