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Welcome Sweat Bees to Your Garden All Season Long

Sweat bees earn their name by landing on skin on hot days to drink sweat. Persistent but rarely stinging unless squashed, they primarily feed on pollen and nectar. Active spring through fall, they need a consistent floral supply—aim for at least three plants blooming at any time.

Unlike most solitary native bees, sweat bees (Halictus) are eusocial: one queen lays eggs, female workers forage and rear brood. They produce two to three generations per season. Fascinatingly, some species nest socially in long-season regions but solitarily in short-season northern or high-altitude areas.

Quick Facts

Genus: Halictus
Common name: Sweat bee
Species: ~10 in North America (north of Mexico); 200 worldwide
Distribution: Most of the world except Australia, New Zealand, southern Asia
Habitat: Woodland edges, gardens, meadows, prairies, old fields
Active: Spring through fall; nesting as early as late April in Northeast

Shown: Female sweat bee on stiff goldenrod (Oligoneuron rigidum)

How They Help

Sweat bees effectively pollinate native plants, cultivated crops, and food crops like blueberries and strawberries. Most are small to medium.

Shown: Female seeking sweat on human skin

Identifying Sweat Bees

Adult Females

Black with white hairs at the apex of each abdominal segment. Pollen-collecting hairs on hind legs. Land on skin for sweat—feeding on salt/minerals. Can resemble Lasioglossum (smaller, pale hair bands at base of abdominal segments).

Adult Males

Longer antennae, slender abdomen, yellow on legs.

Shown: Female on wild geranium (Geranium maculatum)

Attracting Sweat Bees

Generalist foragers visiting diverse open-form flowers spring through fall.

Nesting

Ground-nesters in bare, well-drained soil. Nests can be solitary, communal, or social—often in large aggregations.

Bee-Safe Yard

No pesticides, especially insecticides, on flowering plants.

Forage Plants by Season

Ensure continuous bloom April–October. Add more flowering plants if gaps exist.

Spring: Harebell, violets, beardtongues, wild geranium, Canada anemone, spiderworts, purple meadow-rue, Virginia waterleaf
Summer: Black-eyed Susan, vervains, yellow coneflower, Culver's root, swamp milkweed, Joe Pye weeds/bonesets, leadplant
Late Summer/Fall: Stiff goldenrod, asters (any species)

Shown: Female on stiff goldenrod

Life Cycle

In the Upper Midwest/Great Lakes/Northeast, eusocial nests produce multiple generations/year. Mated females overwinter; queen dies midsummer, succeeded by reproductive daughter. Third brood produces males and females that mate; mated females overwinter, establish new nests in spring.

Shown: Male on wild quinine (Parthenium integrifolium)