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Not all plants are hardy. Some, more fragile, fear freezing. It is therefore necessary to provide them with protection against the cold.
Logically, chilly plants have Mediterranean or tropical origins. Grown in pots outside their preferred climate, they must be sheltered from the cold. Bougainvillea, hibiscus, pelargonium, fuchsia, oleander, azalea, as well as all citrus fruits and cacti are among these sensitive plants.
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> Protect plants from frost and cold
Several solutions are available to you to shelter your non-hardy plants. A veranda, if it is not heated in winter, is an ideal place to store them, transforming into a bright winter garden.
But any frost-free, dry room with a window will also do very well: garage, basement, laundry room, garden shed, etc. The ideal temperature: between 0 and 10 ° C; if this is not possible, between 10 and 15 ° C maximum.
Some plants tolerate spending the winter in the dark and may find a place in the cellar. This is the case with pelargonium, fuchsia and oleander. The same goes for summer bulbs - dahlias, gladioli, etc. - provided the air is very dry.
Plants under protection
If you don't have room to store your boxes and planters, pack their jars in bubble wrap or wintering veil, in order to protect their roots from the cold. For your pots, use polystyrene plates that you will place under the pots to insulate them from the cold coming from the concrete or the tiles of the terrace or balcony.
Do not water in frost, the water will freeze and weigh on the roots. The plants are in a period of vegetative rest in winter anyway, they need very little water and no fertilizer.
Potted plants, and hardy ones?
Even if they tolerate the cold, hardy plants are weakened when they are in a pot. And these, if they are terracotta, can be broken by freezing.
No need to tuck them in, but better to place them along a wall well exposed and protected from the wind for a winter without damage.