I apologize for this delayed reply to your gardening question and hope it is still helpful to you.
Transplanting is up to you. When a plant is more than 3 times the size of the container it should be tranplanted into a larger container. You could also try dividing the plant into 3 plants and repotting each into a new container with fresh potting soil.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
Q&A Library Searching Tips