Unlike bumble bees and honey bees solitary bees do not live in a colony. They look similar to the honey bees and occur throughout the UK. Different species nest in different sizes of holes. The female stocks the nesting hole with nectar and pollen and seals it. The new solitary bees start to emerge the following March and April. Bees play an important role in the pollination of flowers and edibles in your garden. Why not install a bee and insect box in your garden? Once they nest in your garden they will return year after year.