If you do not know which type of Mühlenbeckia you have, frost-free winter quarters are always a good solution. If you have a Mühlenbeckia as a houseplant, then it can be a little cooler in winter than in the growth phase.
The essentials in brief:
- Mühlenbeckia axillaris can overwinter outside
- Mühlenbeckia complexa needs frost-free winter quarters
- little watering (outside only on frost-free days)
- do not fertilize
- shorten before moving to winter quarters (saves space)
Tips
If you don't know exactly what kind of Mühlenbeckia you have, then overwinter the plant frost-free or at least give it good winter protection from leaves and brushwood.