I am slightly confused over this. Some people here thinks that you can do this with all veg and others only with solanceas (Tomatoes, chilies and peppers). Can some cast some light on this for me. If you could to this with beans, marrows, courgettes that could be great as the ones I am raising indoors are going a bit leggy
You can bury virtually all flower seedlings to the base of the seed leaves, so I'd expect the same to be true of vegetables. I can't guarantee it, though.
Can you? You make it sound like this is a fairly general rule. If sommer ever comes, I'll give the burial of the stem a go.
I do it quite often on things that have gone leggy indoors, such as helichrysums and rhodochiton.
I believe it should not be done with cucumbers as they will rot, but confess that I haven't tried.
I did it with my Cosmos Purity seedlings and they look fine.
As jude5 says, none of the Cucurbitaceae family ought to be planted deeper than their root-ball. Courgettes are a no-no. On the other hand, tomatoes, peppers and their related plants benefit from a deeper hole as they will form additional roots from the stem to aid nutrient assimilation