Whether you are allowed to overwinter your non-hardy Dipladenia in the basement depends entirely on your basement. A dark, cold room is not at all suitable for the Mandevilla, which is also the name Dipladenia is traded under.
The Dipladenia doesn't just like it bright in summer
This is what the ideal winter quarters for the Dipladenia look like
Ideally, you overwinter your Dipladenia in a bright room that has a temperature of around 8 °C to 15 °C. If the Mandevilla is too warm or too cold in winter, it will not bloom at all or only very poorly in the coming season. The same applies if the plant is too dark or is cared for incorrectly.
The essentials in brief:
- hibernate bright
- neither too warm nor too cold
- water only a little
- do not fertilize
- Overwintering errors lead to a reluctance to flower
tips
Light and ideally tempered, watered only a little and not fertilized at all - so your Dipladenia will survive the winter well.