Posted: 24/07/2017 at 22:18
Possibly with moving it from pot to ground, then back to a pot, it has been moved too much and stressed. Each time you move a plant it losses it's tiny root system and that needs time to re-establish.
Keep it watered, don't allow the pot to dry out, and in a sheltered spot, from the wind and not in direct sun all day. It is going to take time to grow and become a lovely specimen.
Is it potted in ericacious compost? They do do best in acid soil.