New Jersey • Pollinators • Lawn Pests
Digger Bees in Your NJ Lawn: What They Are and What to Do
Every spring, New Jersey homeowners spot the same alarming sight: small mounds of soil popping up across the lawn, with bees hovering and darting around them. Before you reach for the spray, here is the good news. Those are almost certainly digger bees, also called ground bees: solitary native pollinators that are far less dangerous than they look. Here is what they are, why they picked your lawn, and what to do about them.
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Quick Guide: the 60-second version
- Digger bees are solitary, ground-nesting native bees. Females dig individual burrows in bare, sunny soil, pushing up small mounds.
- They are docile and rarely sting. Males, the ones you see hovering, cannot sting at all.
- Nesting activity lasts a few weeks in spring, then they move on by themselves.
- The best response is usually patience: leave them alone, overseed bare patches, and keep the lawn watered.
- We do not target pollinators. Our treatments focus on tick and mosquito habitat, not bee nests.
What You’re Seeing
Digger bees are solitary bees that nest in the ground rather than in hives. Each female digs her own burrow, excavating soil that piles up into a small mound around the entrance, usually about the size of a half dollar. Because many females often choose the same sunny patch, you can see dozens of mounds clustered together, which looks dramatic but is completely normal.
The bees you notice hovering and darting a few inches above the ground are mostly males, patrolling for mates. They look busy and territorial, but it is all show. You will typically see this activity in spring, often April and May in New Jersey, when the bees emerge to nest.
Why They Picked Your Lawn
Digger bees want three things: bare soil, sun, and good drainage. That describes a lot of New Jersey lawns, especially:
- Thin or patchy areas where grass never quite filled in.
- Sunny, south-facing slopes and banks.
- Sandy or loose soil near walkways, patios, and flower beds.
- Spots under shrubs or along edges where the grass is sparse.
They return to good nesting sites year after year, so once a colony finds your lawn attractive, expect an encore next spring unless the conditions change.
Are They Dangerous?
For most families, no. Digger bees are among the most docile bees you will meet. They have no hive to defend, so they lack the defensive aggression of honey bees or yellowjackets. The hovering males cannot sting at all. Females have stingers but use them only if grabbed or stepped on barefoot, and stings are rare.
They are also genuinely useful. Digger bees are native pollinators, and New Jersey’s native bees do heavy lifting in gardens and on farms across the state. The Rutgers-supported Jersey-Friendly Yards program lists digger bees among the native bees worth supporting in home landscapes. Killing them to save a patch of grass would be a poor trade.
What to Do About Them
In most cases, the right move is to do nothing and let them finish. Nesting activity lasts several weeks in spring, and then the bees move on by themselves. If the mounds bother you:
- Overseed bare patches. Thick turf is the best long-term deterrent. Digger bees want bare soil, so give them grass instead.
- Water the area. They prefer dry, loose soil. Regular watering makes the site less appealing.
- Leave the mounds alone. Filling burrows while bees are active just sends them digging nearby. The soil mounds flatten out on their own.
- Keep shoes on. The one realistic sting risk is stepping barefoot on a female near her burrow. Shoes solve it.
- Do not spray them. Broad insecticides will kill these beneficial pollinators along with everything else, and the next generation will simply find another bare patch.
What We Do and Don’t Treat
Let us be clear about where we fit in. Bite Back targets ticks and mosquitoes in their habitat: shaded vegetation, perimeters, and resting spots. We do not target pollinators, and we do not treat digger bee nests. Protecting bees and butterflies is part of why this company exists.
That said, not every buzzing insect in the lawn is a digger bee. If you are seeing aggressive behavior around food, papery nests under eaves, or insects going in and out of a hole in the house, you may be dealing with yellowjackets, hornets, or carpenter bees, which are a different conversation. When in doubt, send us a photo or give us a call and we will help you figure out what you are looking at.
Laurie’s field note: Every spring I get the same worried call: “There are bees coming out of my lawn!” And every spring I give the same happy answer: those are digger bees, and they are the good guys. I would rather see a lawn full of digger bee mounds than a lawn that has been sprayed into silence. Give them a few weeks, thicken up the grass, and they will move along on their own.
FAQ: Digger Bees in NJ Lawns
Will digger bees sting my kids?
Stings are very rare. The hovering males cannot sting at all, and females sting only if handled or stepped on. Teach kids to watch with their eyes, wear shoes, and leave the mounds alone.
How long will they stay?
Nesting activity typically lasts a few weeks in spring. Once the females finish provisioning their burrows, activity fades on its own without any intervention.
Will they come back next year?
Likely, if the soil stays bare and sunny. Overseeding to thicken the turf and keeping the area watered are the best ways to make the site less attractive next spring.
How do I tell digger bees from wasps?
Digger bees are fuzzy and golden-brown, and they hover around soil mounds. Yellowjackets are smooth, bright yellow and black with narrow waists, and they are aggressive around food and nests. When in doubt, watch from a distance and note where they are coming from: soil mounds mean digger bees.
Will they damage my lawn?
The mounds are cosmetic and temporary. They do not eat grass roots or kill turf the way grubs do. In fact, their tunneling lightly aerates the soil.
Can I just fill in the holes?
While bees are active, filling burrows just pushes them to dig nearby. Wait until activity ends, then overseed the area so grass fills in before next spring.
Do digger bees make honey?
No. They are solitary bees, not honey bees. Each female provisions her own burrow with pollen for her offspring and there is no hive or honeycomb.
Who should I call about them?
For digger bees, usually nobody: patience and overseeding handle it. If you suspect yellowjackets, hornets, or another stinging pest, call a pest professional. We are happy to help identify what you are seeing.
The Takeaway: Good Bees, Temporary Mess
Digger bees look alarming and act harmless. They are native pollinators doing a few weeks of spring housekeeping in your lawn, and then they leave. Overseed the bare spots, keep shoes on, and let them work. Your garden will thank you, and so will the next generation of bees.
If ticks and mosquitoes are the pests actually ruining your yard, that is where we come in, with natural treatments that leave the pollinators alone.
Trusted sources: Jersey-Friendly Yards (Rutgers-supported): Landscaping for Pollinators; Rutgers NJAES (native bee research and pollinator habitat guidance).
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