The pelargoniums, often popularly referred to as geraniums, are not hardy and are best cut back and bare-rooted at temperatures between five and ten degrees Celsius in the basement over the winter. But you can also get the sensitive balcony flowers through the winter without a basement. How this works is explained in the following article.
Geraniums can be wintered light or dark
Overwinter geraniums dark or light
For a dark hibernation, geraniums should no longer have any leaves, otherwise the evaporation rate will be too high and there is also a risk that pests and fungi will settle on the weakened plant. In addition, the darker the winter quarters, the lower the room temperature should be. Of course, this rule also applies the other way around. If the geraniums are not to remain in the cellar, they are best overwintered in a bright location at temperatures between 10 and 15 °C. To do this, pack three or four of the potted geraniums in a clay pot, cover them with a sand-soil mixture and keep this moist over the winter.
tips
If you decide to spend the winter in the cellar, the bare-root geraniums can also be wrapped in newspaper.