They exist, the sensitive ones among the primroses. The fact that primroses react differently to sub-zero temperatures from species to species is not particularly beneficial for laypeople. If you are not sure whether your primrose is winter-hardy, it is better to overwinter it!
How do you overwinter primroses correctly?
To overwinter primroses successfully, cut back the flower stems in summer, water the plant one last time in autumn and remove dead leaves. Protect the primroses outdoors with a layer of leaves, brushwood or spruce branches from the end of September or overwinter them in a cool place in the apartment.
How are primroses overwintered?
If you have planted your primrose after the flowering period, you can protect the plant in the winter as a precaution. At temperatures below -5 °C it becomes critical for the flower buds. Overwintering can happen outdoors or in the apartment in a cool place.
For wintering outdoors, proceed as follows:
- Cut down primrose flower stems in summer
- Water primrose one last time in autumn
- Remove dead leaves before overwintering
- Cover at the end of September with a layer of leaves, brushwood and spruce branches
Tips & Tricks
Primroses in pots on the balcony should be left wrapped in newspaper on the protective wall of the house over the winter.