Hi,I've got the same "impatient-gardener's bug" (I'm unexperienced), and after my tomatoes became as triffids on my kitchen windowsill, now it's my runner bean (one is almost 2ft tall!). What I do is keep them indoors, but when the weather is warm, sunny and clement, I put them out during the day. Meanwhile, the stalks are ready to support them when all frost risk will be over (if ever!). Is it a good strategy? Btw, my tomatoes were definitely too large for my windowsill, and seem now to have settled well in the growhouse... would you agree?