[chamomile]

is it ok to transplant peas that have allready been in the ground for over a month?

[RichardA]

never recommended but I have on occasions done it to fill gaps in rows. It is not at all certain it will work although I have usually done OK. I suggest you water the peas well the night before, lift with a good wide and deep  "rootball"" and move one by one when weather is dull or in evening or even when drizzley and then water well in. Make the new holes a good depth so rootball goes in OK or if roots get exposed let them dangle down into the hole rather than being squashed up. Firm around and water well.
Best of luck.
R

[bigben]

I imagine you would be lucky to not damage a lot of roots  but you could also re-sow some fresh in and around what you transplant so if some transplanted stuff dies, the newly planted stuff should come up and fill the gap.