The first time I noticed ground-nesting bees, I almost made a well-meaning mistake. There was a little patch of bare, sandy soil by my walkway, and tiny bees kept zipping in and out of pinprick holes like commuters at rush hour. My instinct was to “fix” it with mulch. Luckily I paused long enough to watch, and what I was seeing was a neighborhood of solitary bees doing exactly what they have done for ages: digging, provisioning, sealing, and moving on.
A sand planter is a way to offer that same kind of nesting real estate on purpose, especially if your yard is heavy clay, thickly mulched, or mostly patio and lawn. It is not a bee hotel, and it is not a hive. It is simply a sunny, well-draining patch of mostly sand that stays bare and firm enough for small tunnels. If you build it right, the insects that use it are often native ground-nesting bees and other beneficial solitary nesters, and they are far more interested in pollen than in people.
Meet the bees you are helping
Globally, most bee species do not live in hives. Many are solitary, meaning each female makes her own nest. A large portion of those solitary bees nest in the ground, including mining bees (Andrena), many sweat bees (Halictidae), and a variety of other sand and soil nesters across several groups.
It can look like a “colony” because some species nest in aggregations, with lots of individual nests clustered in a good spot. But each tunnel still belongs to one female.
Ground-nesting solitary bees are generally non-aggressive because they are not defending a large hive full of honey and brood. That said, a female can sting if she is grabbed, stepped on, or pinned against skin, so it is still worth giving them space.
If you want the short version of what they need: sun, drainage, stability, and bare soil.
Why a sand planter works
In many suburban yards, we remove exactly the conditions ground nesters rely on. We blanket soil with mulch, keep turf dense, and improve beds with compost that holds moisture. All of that can be great for plants, but it can make the ground too damp, too soft, or too covered for a bee that needs to excavate and keep a tunnel from collapsing.
A sand planter mimics the kind of places bees naturally choose:
- Well-drained soil that dries quickly after rain
- Open, sparsely vegetated ground without thick mulch
- Warmth from sun exposure, especially in spring
- Low disturbance from digging, tilling, or frequent watering
One important note: different species like different textures. Some prefer sandy flats, some like firmer loams, and some choose banks and slopes with a bit more clay. A sand planter is not the answer for every ground nester, but it is a helpful option for many, especially in yards where bare, well-drained soil is hard to come by.
Materials and size
You can build this with a large planter, a shallow raised bed, or a small framed box. I like starting with a container because you can control the soil mix and place it exactly where it gets reliable sun.
Recommended dimensions
- Minimum: 18 to 24 inches wide, 12 inches of filled substrate depth
- Better: 24 to 36 inches wide, 12 to 18 inches of filled substrate depth
Depth matters because many solitary bees nest several inches down, and a deeper profile stays stable and drains well.
What you will need
- A sturdy planter or box with drainage holes (wood, terra cotta, or thick plastic all work)
- Coarse sand (often sold as washed concrete sand, mason sand, or horticultural sand)
- Optional: a small amount of native soil or subsoil from your yard
- Small gravel or broken pottery pieces (optional, for the very bottom to keep holes from clogging)
- A hand tamper or a flat board for firming the surface
- Watering can or gentle hose setting for initial settling only
Avoid very fine sand if you can. Many play sands are quite fine and can compact in a way that holds water, although it depends on the product. Also avoid potting mix, compost-heavy blends, or anything with lots of wood fiber. Those are great for roots, not great for tunnels.
Pick the right location
Location is half the project. Even a perfect sand mix will be ignored if it sits in shade and stays damp.
- Sun: choose a spot with at least 6 hours of direct sun, especially morning sun
- Shelter: a place protected from constant irrigation spray and roof runoff
- Stability: somewhere it will not be bumped, moved, or used as a footrest
- Near flowers: within easy flying distance of blooms, herbs, and “weeds” you allow to flower (even a few dozen yards is fine)
If your yard is very exposed and windy, tucking the planter near a fence or low wall can help keep the surface from blowing around. Just keep it sunny.
Build the sand planter
1) Prepare drainage
Make sure the container has several drainage holes. If it only has one, add more if possible. If you are using a wooden box, line the bottom with hardware cloth to prevent washout, but keep drainage open.
If you want extra insurance, place a thin layer of coarse gravel or broken pottery pieces at the bottom. Do not make it thick. You want the whole profile to drain, not create a perched water layer.
2) Mix your nesting substrate
For many yards, this simple mix works well:
- 80 to 90 percent coarse sand
- 10 to 20 percent native soil (subsoil is better than rich topsoil)
The small portion of native soil helps the sand bind just enough to hold a tunnel shape. If your native soil is heavy clay, use the lower end, closer to 10 percent.
Do not add compost. Ground-nesting bees are not looking for fertility. They are looking for structure and dryness, and extra organic matter tends to hold moisture and encourage persistently damp conditions.
3) Fill and settle
Fill the planter to within 1 inch of the rim. Lightly water once to settle the mix, then let it drain completely.
4) Firm the surface
This is the part people skip. Bees often prefer soil that is firm enough to walk on without sinking, but not crusted hard like concrete.
- Use a hand tamper or press a flat board down across the surface.
- Aim for a surface that feels packed, with a little give.
If the surface turns into a hard crust after drying, the sand is likely too fine or too clay-heavy. Scratch it lightly with a hand rake and consider adding more coarse sand.
5) Keep it mostly bare
Leave the top unmulched. That bare, open look is the point. If you want it to look intentional, you can edge the planter neatly and keep the rim clean. A tidy frame helps neighbors accept a “messy” surface.
Small tweaks that help
Add a gentle slope
If your planter is large enough, mound the sand slightly so one side is a bit higher. Many ground nesters favor slopes because they shed water quickly and warm up fast.
Offer a few pebble landmarks
Bees navigate by landmarks. A few small stones or a single twig off to one side can help returning females pinpoint their nest entrance. Do not cover the surface. Think “a few visual cues,” not “decor.”
Keep water away
Once established, do not water the planter unless you are in an extreme drought and the sand is blowing away. Moisture can collapse tunnels and create the kind of damp conditions many ground nesters avoid.
Is it really bees?
A sand planter can attract bees, but it can also look like other activity at first glance. Before you decide what you have, watch for a few minutes on a warm, calm day.
- Ground-nesting bees: often a bit fuzzy, and you may see pollen on their legs or underside. They tend to come and go with quick, purposeful trips, especially in spring.
- Ants: constant foot traffic on the surface, obvious trails, and lots of individuals moving around on foot.
- Yellowjackets: sleeker, less hairy, and often more defensive. Their nesting activity is frequently most noticeable later in summer, with a busier, more insistent in and out pattern.
If you are unsure and the planter is near a door or play area, place it farther from traffic and give it time. A little distance solves most human and insect misunderstandings.
What not to do
- Do not mulch it. Even a thin mulch layer can block access and trap moisture.
- Do not plant it like a flower pot. Roots and irrigation defeat the purpose.
- Do not use potting soil. It stays too damp and collapses.
- Do not disturb it in spring. That is peak nesting time in many regions.
- Do not treat holes like a problem. Those little volcanoes of sand are success.
When you will see activity
Timing depends on where you live and which species are in your neighborhood. Many ground-nesting bees are most noticeable in spring when early flowers open and the soil begins to warm, but some nest later into summer. In warmer climates, you may see earlier start dates and longer seasons. In cooler climates, activity can be concentrated into a few bright weeks.
In my own yard, I start looking on the first reliably mild days when dandelions and tiny lawn flowers are suddenly busy.
Some signs your planter is being used:
- Small, round holes, often with a crescent of sand beside them
- Bees making low, fast flights close to the surface
- Individuals disappearing into holes for a few seconds to a few minutes
- New holes appearing over several days
If nothing happens the first season, do not assume failure. It can take time for local bees to discover a new patch, and some species return to the same general nesting area year after year once established.
Pair it with food nearby
Nesting habitat helps, but bees still need pollen and nectar within easy range. A sand planter works best when it is part of a yard that allows flowers to happen.
If you are deciding what to keep or pull, you might enjoy my thoughts on volunteer plants here: Weeds vs Wildflowers: Which Volunteers to Keep.
Also consider letting a small corner of the yard be early and imperfect in spring. Those early blooms are a lifeline.
Avoid chemicals nearby
If your goal is to invite bees in, try to keep pesticides, herbicides, and “weed and feed” products away from both the planter and the flowers nearby. Drift, residues in soil, and treated blooms can all undercut the habitat you just built. When I need to manage a problem plant near bee areas, I stick to hand removal and small, targeted fixes instead of broad sprays.
Safety and coexistence
A ground-nesting bee planter looks a bit like an ant bed at first glance, so it helps to know what you are dealing with.
- Stings are uncommon. Solitary bees do not have a big hive to defend, but they can sting if threatened or handled.
- Give them a buffer. Place the planter a few feet away from doors, play areas, and heavy foot traffic.
- Teach watching distance. Kids do beautifully with this when you frame it as a nature observation spot.
- Pets: most dogs ignore it, but a persistent digger can wreck tunnels. A small low fence during nesting season can help.
If you are trying to make your yard more welcoming overall, our Backyard Wildlife guide is a good place to wander next.
Simple maintenance
Spring and early summer
- Do not rake, stir, or re-level the sand.
- Keep sprinklers from hitting the planter.
- If weeds sprout, pinch them at the base instead of pulling deeply.
Late summer and fall
- If the surface has crusted or become compacted, lightly roughen only the top quarter inch.
- Top up with coarse sand if the level has dropped.
Winter
- Leave it alone.
- Avoid covering it with leaves or mulch. If it naturally collects leaves, brush them off gently.
Troubleshooting
The sand keeps washing out
Move the planter away from roof drip lines and downspouts. Increase the proportion of coarse sand, and add a small amount of native soil for binding. Also check that drainage holes are not letting sand fall through too freely. A layer of hardware cloth can help.
It stays damp for days after rain
Your sand is likely too fine, or the planter does not drain well. Add more coarse sand and ensure multiple drainage holes. Consider raising the planter on pot feet or bricks so holes are not blocked against the ground.
I see wasps instead of bees
Some solitary wasps also nest in sandy soil, and many are beneficial predators of garden pests. If they are not bothering anyone, they are often part of the same quiet underground community.
Ants moved in
Ants like dry sand too. Sometimes bees and ants coexist, sometimes bees avoid the busiest ant spots. If ants dominate, try making a second planter a few yards away with slightly different sun exposure or a firmer surface.
A small habitat
I have built plenty of projects in my yard, but this is one of the few that feels like it disappears into the landscape once it is in place. A simple box of sand in a warm spot does not look like much, until you notice the first tiny head poking out of a fresh tunnel. Then, for a few weeks, it becomes a front-row seat to one of the most overlooked spring spectacles we have.
If you want to keep building micro-habitats, a water feature can be just as transformative for wildlife. This container project pairs nicely with a nesting planter: Build a Micro-Pond in a Container.