Where can i buy queen bumblebees to start a colony contained by my garden? ...

Citrus trees fertilizer and soil?
You can buy a together colony from: Tel: 01933 885009 (Norfolk) for lb100.

My Oak Tree Has a Condition to...
good luck, there's a shortage due to the virus, CCD

http://www.bumblebee.org/bodyLegs.htm
How much does an acre cost?
Answers:    plant early flowering flowers .
wallflowers are accurate ,you can purchase and plant now within uk.
the bumblebee queens (who overwinter)will find them in spring and if in attendance is a suitable site (under stones on a rockery is often favoured)they will form a fresh colony themselves.