Allotments 4 All

my tomato seedlings are getting rather big now and i was wondering if they would be OK to put into the grow bags now??? I really want to get this right as when my dad used to have his allotment he always used to come home with the most scrummie tomatoes and i have put myself under a bit of pressure with them to get them as good as my dads silly of me i know and i should mention that i love tomato they are my fave and well i could go on but i wont or i can see myself being carted off so all advise more than welcome

how big are they?

6 to 8" tall is the norm. From 3-4" pots.

The 'ideal' is to have the first flowers on. I never achieve that.

If you DO put them out, they should be covered with fleece at night.