Hi there. I'm a complete novice and am trying to grow a lot of different plants from the same start - a windowsill propogator. I have three propogators and they're the type with numerous small cells. I'm a week into growing tomatoes, cucumbers, chillis, pak choi, peppers, broccoli, lettuce, salad mix, coriander, basil.....
My question is whether everything needs to be thinned down to a single seedling? For some, such as the cucumber which grows thick stems this is obvious. For other things such as basil, pak choi and salad mix, the seedlings grow much thinner and I don't know. With these, should I thin them all to one now, just separate them once I prick them out into larger pots (and risk tangled roots breaking?) or prick them out all together in a clump once they've grown more and pot them on exactly like this?