Bombus pascuorum
- The Common Carder Bumble Bee

Common carder bumble bee flying toward raspberry flowers.Common carder bumble bee flying toward raspberry flowers.

The common carder bumble bee, Bombus pascuorum, is widespread in the UK.  It is one of the later bumble bees to appear, but has a long foraging season and is a useful pollinator of autumn crops, such as autumn raspberries.


Queens are relatively small in comparison with other bumble bee species, at about 17mm in length.  They have gingery bodies, often with black/dark hairs, and usually ginger tufts of hair on the face. 

Common carder bumble bee in flight.Common carder bumble bee in flight.

Workers have similar colouring to queens, and can be very small.  Males have yellow hairs on the face, with some black ones. 

The face is longer in this species than it is wide, and it is a long tongued species.  This species is very easily confused with the other carder bees, B. humilis and B. muscorum.

Bombus pascuorum lifecycle and colony

Common carder bumble bee foraging on knapweed.Common carder bumble bee foraging on knapweed.

Queens emerge from late March onwards.  They search for nest sites over tussocky grassland, where they prefer to nest, along with the edges of hedgerows and near shrubs.  Like other carder bees, they ‘construct’ their nests from grasses and moss, ‘woven’ together. 

Workers appear from April onwards, and can be seen foraging through to October – even November during mild years and food availability permitting.  Males and daughter queens emerge from June.  Colonies of between 100 – 200 are reported.


Common carder bumble bee foraging on bergamot.Common carder bumble bee foraging on bergamot.

Bombus pascuorum
forage on comfrey, lavender, bugle, rosemary, wallflower, red campion, bergamot, geranium cultivars, horse chestnut, marsh and hedgewoundworts, sedum, raspberry, bramble, Himalayan balsam, knapweed, devil’s-bit scabious, clovers, meadow vetchling and bird’s foot trefoil.

Parasites and Predators

This species is host to the cuckoo bumble bee B. campestris, and may be parasitized by the nematode Sphaerularia bombi.  This species may also be attacked by the conopid fly, Physocephala rufipes.

You might like these

  • Do Bumble Bees Make Honey?

    Bumble bees store nectar in little wax pots for feeding the colony as it grows, but it is not really quite the same thing as honey made by honey bees.

  • The Bumble Bee Life Cycle

    The bumble bee life cycle starts with an impregnated queen when she emerges from her nest from her winter snooze. She feeds and seeks a suitable place to nest.

  • Should Bumble Bee Be Written As One Word Or Two?

    A look at the rationale for writing bumble bee as two words rather than one (bumble bee instead of bumblebee).

Create A Bee Garden

From lawns, to bee houses and flower shapes, turn your garden into bee heaven!

Learn More

Gardening for bees.

Go back to Home page