Onions

Hi everyone, I really am new to all this but about two years ago I decided to put a 'few' veg seeds that I won in a competition into a very small patch of garden we have and everything came up, I was hooked on veg growing after that.  I am a complete novice however and could do with lots of advice.  The first thing is onions, I have planted some seeds in a large trough (3' x 14") and they are just coming up.  They will obviously need thinning out once they are big enough (first question is how big do they need to be before I do this)  and can I plant the ones that I take out in the actual veg plot or do I have to throw them away.

Also when is the best time to move a rhubarb crown  :roll:

Every one has to start some where, i bet next yr you will be growing big Kelseys like me

and now for the rhubarb question

try this link:

h**p://www.growfruitandveg.co.uk/grapevine/feeling-fruity/moving-rhubarb_4039.html