In principle, general statements about the actual winter hardiness of magnolias cannot be made, since the sensitivity to frost depends on the selected variety. Basically, the deciduous magnolias are tougher than the evergreens that are used to milder temperatures (e.g. Magnolia grandiflora), although there are also specially bred, more or less winter-hardy variants.
The older the magnolia, the less sensitive it is
But whichever variety you have at home, young magnolias should always be wrapped in a protective fleece or jute in winter - both materials are breathable and ensure that the plants get enough air, but at the same time protect against the cold. Older trees, on the other hand, get used to the temperatures over time and are therefore less sensitive.
Protect flower buds in spring
However, the problem with both young and older magnolias is the fact that the different parts of the plant react very differently to frost. The roots, buds and flowers in particular are very sensitive, which is why every magnolia should be protected with a thick layer of mulch (€239.00) over the winter. In early spring, you should protect the buds and blossoms from the onset of late frosts, otherwise the splendid bloom will be ruined.
tips and tricks
Due to the fact that their roots can be damaged very quickly by penetrating cold, pot magnolias should always be well wrapped up in winter or overwintered in cold house conditions (i.e. frost-free, but at a maximum of 10 °C). In addition, for deciduous varieties, wintering in a dark place is possible.