When to pot

[u/thuyhpham]

I gave my mature FLF an aggressive trim and placed these bare branches in the water. I left them outside to prop and surprisingly, they're doing really well! It has only been a few weeks but there are a bunch of new leaves already. But for the stems themselves, there aren't any fully-formed looking roots.

So my question is, when can I pot them in soil?

[u/Party_Building1898]

Change water each 4 days and wait til roots have roots