Bees nesting in a flower tub
 

Hi

I have a large plastic tub that I moved a load of spring bulbs into when
the garden was being dug up several years ago and I ended up just
keeping it as a spring bulb tub.

This year I have found that there are bees nesting in it! I've seen
several rusty coloured smallish bumble-type bees (bigger than mason
bees) crawling in from the top of the pot and if the pot is jostled a
ferocious buzzing starts up (that's how I found out in the first place).
Could these be some kind of carder bee? I assume they're safe to have
there and won't become aggressive.

I'd love to know what kind they are and if anyone else has them?

Thanks.
--
Lynda Thornton