I've started them off on the windowsill - what now?

[MrsCordial]

Hello. I sowed various seeds during half term with DS, and I'm pleasantly surprised to see them coming through already. The peas, pictured, are now almost bumping the top of the windowsill planter, but I'm assuming they're still too small to go outside (we've had a couple of frosts just recently), so what do I do - pot them on for a few weeks more? I'm nervous I'll damage them if I do that, but they can't stay where they are for much longer!

Edited to add: in case I haven't made it apparent, the planter has a lid on top usually, I just took it off for photographing.

[Bill HH]

Here is what I would do, leave the lid off now, put them outside in the day to get used to it, bring them in at night, after a few days leave them out, after they have been out for several days and nights plant them in the garden. Its call hardening off.

Actualy looking at the pic, some are more advanced than others, perhaps it would be best to pot on the bigger ones and leave the hardening off until the little ones are bigger. Once you remove the big ones keep the lid on for a few days. The lid keeps a bit of warmth in but also limits the light they need,

[MrsCordial]

Thanks Bill, that's really useful. In the photo is the smarter of my two windowsill planters - it's divided up inside into several units that can be removed independently, so I should be able to just remove the peas and leave the rest to get on with it. The others are a mixed bag but there are lots of tomato plants in there, which are nowhere near ready for hardening off just yet.

Edited to add: numpty lesson learned this year is plant one type of thing per windowsill planter.

[Bill HH]

Peas are pretty tough so repotting wont hurt them if you are careful, always handle seedlings by the leaves not the stem.

[leonmc0708]

Are they not just different plants ?

[Two_Sheds]

The peas, pictured, are now almost bumping the top of the ...planter ... the planter has a lid on top

You shouldn't keep a cloche (lid) on once the seeds have germinated, otherwise the seedlings are likely to rot in the humidity.

And peas don't need to be indoors at all, they'll grow much tougher if you start them outside in a cold frame or blowaway.
Save the indoor propagator for tender seeds, eg. tomatoes, chillies

[MrsCordial]

Ahh, thank you Two Sheds.

LeonMc - sorry, I'm not sure what you mean?