Should hibiscus plants be dug up and separated after they have reached a certain width? And is it okay to move them inside after already being outside for a couple years?
Certified GKH Gardening Expert
No they do not need to be divided, but they may require pruning to keep them at a manageable size. This article will help with that: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/tips-for-pruning-hibiscus-plants-when-to-prune-hibiscus.htm
If they have been growing in ground for a number of years without any issue, I would let them be. Digging them up and putting them in a pot to bring indoors may only put them into shock. However, if you would like to start a new plant and grow this indoors, that would be a good alternative. This article will help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-propagation.htm