There are different types of Mühlenbeckia that are hardy to different degrees. Therefore, they also need different methods of overwintering. The Mühlenbeckia axillaris (black-fruited wire shrub) is considered to be quite frost hardy down to about - 20 °C and is welcome to overwinter outside.

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