When should I repot my Heptapleurum umbrella plant?
Repotting My Plant
Certified GKH Gardening Expert
You want to wait until they become just a little root bound. How long that will take varies on the plant and its growing conditions. This article will help you with figuring out if it is root bound or not: https://www.gardeningknowhow.com/plant-problems/environmental/root-bound-symptoms.htm