They grew!...now what?

Right back in the first couple of weeks of June I purchased two mini propagation starter kits from the pound shop. Tomato and Spring Onion.
Anyway I had sort of given up on the hope that they would sprout, being kind of late in the year and crumbly, pound-shop soil
Anyway, to my complete surprise and delight, I came in from a long day at work yesterday evening only to find seedlings in both.
The spring onion ones are tiny, but the tomato ones are about and inch tall each!

I've just realised though that I don't actually know what to do next so any guidance would be great. Do I separate them into the compartmentalised trays I have or...?

 

Hi Leafos,
I would guess don't do anything just yet because they are too small and maybe transplant them in the desired location in a few weeks.
What does it say on the packet?

 

Not alot, to be honest. It just said 'once big enough to handle, transplant into well drained soil'...not much information there.
So not yet, then? Would pots be a better idea than the compartmentalised seedling trays?

 

Pots definately, leave them untill they are a bit bigger then carefully holding the top leaves of the tomato's (not the stem) transplant them individually into a their own 3" pot. Grow them on a little bit more then decide where they are ultimately to go ie. Grow bag or garden or allotment. Or Larger pots! Not sure about the spring onions though..

 

May be worth transplanting the onions into the long window type troughs you see. As long as they're quite deep you should be fine. I usually sow seed direct into the ground though.

 

For what it's worth, I'd suggest that, rather than transplanting your tomatoes into 'conventional' pots, you make up some newspaper 'pots' (just use about ¼ of a broadsheet page - 2 or 3 thicknesses is sufficient - wrap them around something like a loo roll 'innards', tuck in the bottom & secure with a bit of twine), and stand them in a seed tray - that way you'll be able to see when the roots begin to come out of the bottom and the sides and will be able to pot them on without disturbing the roots any further.

I always use newspaper pots, much cheaper than buying plastic ones, 'environmentally friendly' and definitely space saving.