With all these cheap supermarket pot plants, they put 3 cuttings in each pot to make it look good and saleable. We always get the 99p hibiscus and I use them in the garden in the summer. Nice cheap plants at 33p a plant, I had a really nice one this year in a pot of cream coloured flowers . a fantastic orange flamed coloured double.
I sometimes put one in a big pot in the conservatory after it too cold in the garden and after a light prune it usually grows into quite a nice shrub with at least 4 flowers a day. I throw it out when it gets too big and start another in a different colour. But you can keep it smaller with pruning but it does not bloom so well.