However, you should make sure beforehand that your nasturtium is actually a perennial variety. There are now numerous new breeds with many color variants. Unfortunately, most of them are annuals.
also read
- Is nasturtium hardy?
- How long does nasturtium take to germinate?
- Is the nasturtium poisonous?
Hibernate nasturtiums properly
Cut your nasturtiums back from the flowerbed in the fall and plant the tuber in a large pot. Put it in a light and frost-free place, for example in the winter garden. How far back you cut the nasturtiums depends, among other things, on the space available.
If you already have your nasturtiums in pots or boxes on the balcony or terrace, transplanting is not necessary. Just cut off dead flowers and leaves and put the plants in their winter place. You can restrict watering a little during the winter months. However, be careful not to let the soil get too dry.
The essentials in brief:
- not frost hardy
- annual and perennial varieties
- overwinter in light and frost-free
Alternative to wintering
If you don't have space to overwinter your nasturtiums, but would like to plant the same varieties in the next year, there is an alternative for this too. Cut cuttings from your old plant or take seeds that you sow in spring.
The cuttings initially require less space and a smaller pot, but are genetically identical to the original plant. In spring they can be planted right after the ice saints and you don't have to wait too long for the flowers you are used to.
If you have decided to collect the seeds, you should dry them carefully so that they do not go moldy. You can start sowing on the windowsill or in the heated greenhouse as early as March.
Tips & Tricks
Before overwintering, check your seed package to see whether you have bought an annual or perennial variety.
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