Cheshire, United Kingdom

Bugs in my orchid compost

I have some orchid seedlings that I'm growing indoors. I potted them up from the sterile flask that they came in (they were a present...) into small individual pots several weeks ago, into a mix of orchid compost and a bit of perlite. They've been in an unheated propagator since, and watered occasionally.

There are now lots of tiny white bugs in the compost and under the pots. They're so small I can't get a photo of them, but they're a thin shape, white, and "jump".

Any ideas what they are and what I should do about them?? Thanks.

• 18 Jul, 2012