Honey bees live in hives, but most native bees do not. The majority of species are solitary, and they nest either in bare soil or in hollow and pithy stems. A garden full of flowers can still come up short on bees if it offers nowhere to nest.
Ground nesters need open soil
A large share of native bees dig tunnels in the ground. Heavy mulch and dense turf seal that surface off. Leaving a sunny patch of bare, well-drained soil — even a south-facing slope at the edge of a bed — gives mining bees somewhere to start. These bees are docile and rarely sting; an active nesting area is a sign of a healthy garden rather than a hazard.
Stem nesters need standing stalks
Other bees use the hollow or pithy centres of dead stems. The single most useful thing a gardener can do for them is to delay the autumn cleanup. Leaving stems standing over winter, then cutting them to varying heights in spring, opens the pith for nesting while keeping the plants tidy enough for a managed garden.
Three low-effort habitat choices
- Keep a sunny patch of bare, undisturbed soil.
- Leave flower stems standing through winter.
- Skip pesticides, including products that drift onto blooms.
On bee hotels
Purchased bee houses can help when they are well made and cleaned between seasons, but a poorly maintained one can spread disease and parasites. A varied planting and undisturbed natural nesting sites do more, with less risk, than a single decorative box.
The cheapest habitat improvement is usually doing less: less mulch, less tidying, fewer sprays.
Pairing shelter with forage
Nesting sites only matter alongside food. The plants covered in the three-season bloom plan and the host plants in the milkweed guide give those bees a reason to stay. For species lists and conservation context, the Government of Canada environment resources are a sound reference.