Posted: 12/02/2013 at 21:54
I have always found that spring is a perfect time to sort out houseplants. Just as they need a bit more watering and feeding in spring, it is the time to re-pot as necessary.
With three plants now a bit overcrowded in their pot, I would leave it for just a few more weeks, and then make sure that the compost is nice and damp. Remove the complete rootball from the pot and gently tease out the roots. (A bit of patience may be required here if they have grown into each other!).
Re-pot into separate pots, and place where each one will be happiest. (South facing windows are generally too hot in summer, but reasonable levels of light and warmth will usually be OK).
My African violet does exceptionally well on a north-facing windowsill. The other plants, I'm less sure of any specific requirements.