Leafcutter Bee Holes in Roses: They're Helping, Not Hurting

By Austin Little

Neat half-moon cutouts along the edges of rose leaves are almost always leafcutter bees. They're building nurseries, not eating your plant, and a healthy rose shrugs it off. Here's how to confirm it, what else looks similar, and when to actually worry.

AI disclosure. This page was drafted with AI assistance and edited for Apiary. We don't invent quotes, stats, people, or events. If something looks off, tell Austin — that's the point of a living hive.

If your rose leaves have smooth, clean, semicircular or nearly circular cuts along the edges, like someone used a tiny hole punch on the leaf margin, you're almost certainly looking at the work of leafcutter bees. They're native solitary bees, and they're not eating your roses.

For a healthy rose, this is cosmetic. The plant keeps most of its leaf area, keeps photosynthesizing, and keeps blooming. Meanwhile, those same bees are pollinating flowers around your yard. The best response in almost every case is to leave them alone and enjoy knowing your garden is supporting native bees.

The exceptions are small: a very young or struggling plant that's losing a lot of leaf area, or a show rose where looks matter. Even then, there are gentle options. And it's worth confirming the damage really is leafcutters, because other rose pests leave very different marks and need different responses.

What leafcutter bee damage looks like

Leafcutter bee cuts are distinctive:

Position: almost always on the edge of the leaf, not in the middle.
Edges: smooth and crisp, as if cut with scissors. No chewed, ragged, or brown edges.
Pattern: several cuts on the same leaf or nearby leaves, often in a scalloped row.
No other signs: no droppings, no webbing, no skeletonized veins, no slime, no visible larvae on the leaf.

If you're lucky, you'll catch the bee in the act. A leafcutter lands on the leaf edge, holds on with her legs, and cuts in a smooth arc with her mandibles in a few seconds.

Who leafcutter bees are

Solitary bees. Each female builds and provisions her own nest. No hive, no queen, no honey.
Summer flyers. Many species are active in summer, often after spring mason bees are done.
Belly pollen carriers. Females carry pollen on dense hairs on the underside of the abdomen, called a scopa, instead of in baskets on the legs.
Cavity nesters. They nest in existing tunnels such as hollow stems, beetle holes in wood, bee hotel tubes, and sometimes in soil or soft rotting wood, depending on species.
Gentle. They're generally not aggressive. They can sting if handled, and stings are often described as mild, but reactions vary.
Good pollinators.

Spotting a leafcutter on the wing

Leafcutters are easy to miss until you know what to look for.

Size: many are roughly honey bee size, some smaller, some larger.
Build: often stocky, with a broad head and strong jaws for cutting.
Color: usually dark gray to black with pale bands of hair on the abdomen.
The belly: a loaded female's underside glows yellow, orange, or white with pollen, which is the single best clue.
The posture: some females hold the tip of the abdomen slightly raised while feeding on flowers, showing off that pollen-packed belly.
The behavior: quick, purposeful flights between flowers and leaves, and a habit of returning to the same plant to cut again.

If you see a bee landing on a rose leaf edge and leaving with a green disc, there's no ID question left.

Why they cut leaves

The leaf pieces are building material. A female leafcutter:

Finds a suitable tunnel.
Cuts leaf pieces and carries them back, one at a time.
Wraps them into a thimble-shaped cell inside the tunnel.
Fills the cell with a mix of pollen and nectar.
Lays an egg on it.
Caps the cell with more leaf discs.
Repeats, building a row of cells, then seals the entrance with a thicker leaf plug.

A leafcutter's season, start to finish

Knowing the calendar helps you understand why the cuts show up when they do, and why they stop.

Late spring to early summer: Adults emerge from last year's nests as the weather warms. Males usually appear first and patrol flowers waiting for females.
Early to midsummer: Females mate and start nesting. This is when fresh cuts appear on your roses, sometimes almost overnight.
Midsummer: Peak activity. A single female builds a series of cells, cutting many leaf pieces over her adult life. Several females in the neighborhood can make it look like your rose was attacked by a hole punch.
Late summer: Adults die off. Cutting slows and stops. Inside sealed tunnels, the young eat their pollen stores and grow.
Fall and winter: The next generation rests inside leaf cells, usually as mature larvae, waiting for warm weather.
The following year: They finish developing and emerge, and the cycle starts again.

So if you're seeing fresh cuts, you're watching a few weeks of intense building that will end on its own. The leaves you lose this month become next summer's pollinators.

Why roses?

Leafcutters like leaves that are smooth, thin, and flexible enough to cut and roll but sturdy enough to hold shape. Rose leaves fit that profile well.

They aren't picky about variety or price tag. Your prize hybrid tea and your grocery-store mini rose are equally fair game.

Is it actually hurting the rose?

For an established, healthy plant: generally no.

Why it's usually fine:

The bees take a small portion of total leaf area.
Bees don't take every leaf; they spread cuts across many plants.
The nesting season is limited, so it doesn't go on all year.

When it might matter:

Very young plants or new transplants with few leaves.
Plants already stressed by drought, disease, or other pests.
Show or exhibition roses, where looks are the point.

Even then, losing a few leaf pieces rarely threatens the plant's survival.

Lookalikes: when it's not leafcutters

Before deciding it's harmless, rule these out.

Rose slugs (sawfly larvae)

What you see: leaves look skeletonized or "windowpaned," with only a thin translucent layer or veins left, often in patches. Later, holes may form.
Key difference: irregular feeding on the leaf surface, not neat edge cuts.

Caterpillars

What you see: irregular, ragged holes or chewed edges, often with dark droppings (frass) nearby.
Key difference: edges look chewed and uneven, not crisp arcs.

Beetles

What you see: depending on the species, ragged holes, chewed petals, or lacy skeletonized leaves where the tissue between veins is gone.
Key difference: beetles are usually visible on the plant, and damage isn't neat circles.

Snails and slugs

What you see: irregular holes with ragged edges, plus slime trails, often after damp nights.
Key difference: slime and messy edges.

Earwigs

What you see: ragged holes in leaves and petals, often at night.
Key difference: irregular, often in the middle of leaves or on blooms.

Fungal leaf spots and shot hole

What you see: spots that may turn brown, dry, and fall out, leaving holes with discolored or brown margins.

Quick rule: clean, smooth arcs on the edge = leafcutter bee. Anything ragged, slimy, windowpaned, or discolored = something else.

Keeping your roses healthy enough to share

The best defense against any leaf damage, bee or otherwise, is a vigorous plant. A strong rose replaces leaf area quickly and doesn't miss a few discs.

Water deeply and less often rather than with frequent light sprinkles.
Mulch the root zone to hold moisture and moderate soil temperature, while leaving some bare soil elsewhere in the garden for ground-nesting bees.
Give roses sun. Most roses bloom and grow best with plenty of direct sun.
Feed modestly. Over-fertilizing can push soft, lush growth that some pests, like aphids, love.
Prune for airflow. Opening the center of the shrub helps leaves dry faster after rain or watering.
Clean up diseased leaves that fall, rather than leaving them around plants with a known disease problem.
Choose disease-resistant varieties when adding new roses. A plant that isn't fighting black spot or mildew has more leaf to spare.

A rose that's healthy enough to share a few leaves with bees is a rose that's healthy, period.

Should you protect your roses?

For most gardeners, the answer is no. Leafcutters are worth having.

If you have a specific reason to reduce cuts, use gentle methods only:

Lightweight row cover or garden netting over a few prized plants during peak leafcutter season.
Plant "sacrificial" leaf sources nearby, like a redbud or other shrub the bees like, so cuts are spread across more plants. Results may vary.
Accept some cuts on garden roses and focus protection on the one or two that matter most.

Don't use insecticides to stop leafcutter bees. If you need to treat a different rose pest, choose targeted methods, avoid spraying open flowers, and read labels for bee hazard warnings. The EPA pollinator protection pages explain how those warnings work.

Rose canes and nesting

Some gardeners notice small holes in the cut ends of rose canes after pruning.

You'll sometimes see advice to seal cut rose canes with glue or sealant to keep "cane borers" out. Whether that's necessary depends on your region and what's actually causing the problem. If cane dieback is a real problem for you, ask a local rose society or extension office for regionally appropriate advice.

If you want to help these bees, try leaving some pruned cane stubs on the plant or saving cut canes in a bundle elsewhere in the garden.

How to welcome leafcutters on purpose

If you'd rather see more leafcutters than fewer, set up the yard for them.

Nesting:

Bee hotel with the right tunnel sizes.
Openable nesting material like paper liners or wooden trays, so you can clean or replace it each year.
Morning sun on the hotel face, with shade during the hottest afternoons in hot climates. Apiary's guide to bee hotels on fence posts covers placement.
Standing stems left in the garden over winter.

Food:

Summer bloom. Leafcutters fly in summer, so plant flowers for that season.
Native plants suited to your region.

Leaves:

Keep some smooth-leaved shrubs around. Your roses count.

Protection:

Skip insecticides, especially on flowers.
Clean bee hotels on the right schedule. For leafcutters, that means not scraping out leaf-plugged tubes in fall, because the young are often still inside. Apiary's guide to cleaning a bee hotel once a year explains the timing.

Watching leafcutters work

They're fun to watch, and your roses give you a front-row seat.

Best time: warm, sunny summer days, mid-morning to afternoon.
Where: sit near a rose with fresh cuts and wait. They often return to the same plant.
What to look for: a bee landing on a leaf edge, cutting in an arc, then flying off with the piece tucked under her body.
Then: watch her flight path. If you have a bee hotel, see whether she lands at a tube.
Kids: it's a great "find the bee" project. Have them count cuts on a leaf, or draw the shapes.

Take photos. A close-up of a leafcutter carrying a leaf disc is one of those garden moments that makes the whole yard feel alive.

Leafcutters in small gardens and containers

You don't need a big yard to host leafcutters or to grow roses alongside them.

Container roses on a patio or balcony can still get cut. That's a sign leafcutters are nesting somewhere nearby, possibly in a wall crack, a neighbor's stems, or a bee hotel down the block.
A small bee hotel mounted on a sunny wall or post can offer nesting tunnels in tight spaces. Keep it clean and openable.
A few pots of summer flowers next to the rose, such as a compact sunflower, gaillardia, or a native aster, give females food close to the leaves they're cutting.
Leave pruned stems from container plants in a small bundle tucked in a corner instead of throwing them out.

In small spaces, you'll see the bees up close, which makes the cutouts feel a lot less like damage and a lot more like a neighborhood project.

Explaining it to neighbors, garden clubs, or an HOA

If someone sees your roses and assumes you have a pest problem, a short, plain explanation usually works:

"Those round cuts are from leafcutter bees. They're native pollinators. They borrow leaf pieces to build nests, it doesn't hurt the plant, and they help the whole street's gardens."

If you're in a garden club or rose society, it's worth sharing with photos, because the cutouts are a common question. And if you're worried about appearances, remember that the cuts stop on their own by late summer and new growth fills in.

A quick decision guide

Are the holes clean semicircles on leaf edges?

Yes → leafcutter bees. Go to step 2.
No → check the lookalikes above.

Is the plant healthy and established?

Yes → leave it. Enjoy the bees.
No → protect just that plant with fine row cover during peak season, and work on its general health.

Is this a show rose where every leaf counts?

Yes → cover it temporarily, or accept a few cuts.
No → leave it.

Thinking about spraying?

Don't, for leafcutters. Spray only for a confirmed different pest, with a targeted product, following the label.

Common mistakes

Assuming it's a pest. Neat edge cuts are bees, not bugs eating your plant.

Spraying. It harms bees and other beneficial insects and doesn't fix cosmetic damage.

Misidentifying other damage. Ragged holes, skeletonized patches, or slime mean something else.

Cleaning out leafcutter tubes in fall. The young may still be inside.

Removing all smooth-leaved plants. That just pushes bees elsewhere, and you lose pollinators.

Wrapping roses in netting that traps wildlife. If you cover plants, use fine fabric row cover and check it often.

FAQ

What makes perfect half-circle holes in rose leaves? Almost always leafcutter bees. They cut leaf pieces to build nest cells.

Do leafcutter bees harm roses? Usually not. The damage is cosmetic for healthy, established plants.

How do I stop leafcutter bees from cutting my roses? Most gardeners don't need to. If you must, cover a few prized plants with fine row cover during peak season. Avoid insecticides.

Are leafcutter bees good for the garden? Yes. They're native pollinators, generally gentle, and active in summer when many vegetables and flowers bloom.

Do leafcutter bees sting? They can if handled, but they're not aggressive, and males can't sting. Anyone with a sting allergy should take normal precautions.

Where do leafcutter bees nest? In existing tunnels, such as hollow stems, beetle holes in wood, and bee hotel tubes. Some species nest in soil or rotting wood.

The bottom line

Those tidy half-moon cutouts in your rose leaves are a sign of a healthy garden, not a sick plant. Leafcutter bees borrow a little leaf to build nurseries for the next generation of pollinators, and a healthy rose barely notices.

Confirm it's leafcutters, skip the sprays, and if you're curious, put up a clean bee hotel and watch where those leaf pieces go. Your roses are helping raise bees. That's a pretty good job for a shrub.