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Succulent plants, as it is known, are not all the same: each species needs specific climatic conditions.What is common to almost all succulents is winter rest.During this phase, the succulents reduce their vital functions to a minimum and regenerate: the aquifer parenchymata become smaller, with the consequent reduction in the total volume of the plant. This phenomenon must not worry at all, as it is part of the normal life cycle of the plant.What is important to remember is that it is not absolutely necessary to give water to the plant: in fact the humidity could cause the roots to rot, leading to the death of the vegetable.The plants need a ventilated environment: if this is not possible, to keep the succulent in good health, the environment should be ventilated with the help of a common domestic fan. A couple of hours a day is enough. This prevents the possibility of parasitic fungi forming on plant tissues.Some particularly sensitive succulent plants (Epiphyllum, Euphorbia, Hoya) do not tolerate temperatures below 12-14 degrees: only for these species it is advisable to house them at home during the winter season.As far as ventilation and lighting are concerned, the same rules apply to most succulents.As far as the water requirement is concerned, on the other hand, keep in mind that, due to the higher temperatures in which they live, these plants need a light irrigation once a month and, possibly, even a water mist at least once a week, to prevent the tissues from drying out.repotting
Succulent plants, like any other plant species in pots, need periodic changes in the soil which, after a few months, is decidedly poor in those chemical elements essential to the life of the organism.
For this reason, the winter rest period of the succulent is the most suitable for performing repotting operations, with the transfer from the original container to a slightly larger one and a simultaneous change of the soil. This practice, although necessary, still constitutes a real trauma for the plant, and therefore it is strongly recommended to do it during the rest season, before the vegetative awakening.
The ideal period therefore runs from the end of January to the end of February.
Younger plants benefit from transfers in larger frequent vessels, while for more adult ones it is advisable to wait for the succulent roots to come out of the drain holes in the pot before repotting them.
At the time of repotting it is necessary to proceed at the same time to renew the soil: there are specific ones for fat plants, but it is possible alternatively to prepare the mixture by hand, mixing equal parts river sand, pumice (or lapillus) and common earth from the garden.
Only with regard to Asclepiadaceae (Hoya, Huernia, Hoodia, Orbea, Stapelia, Caralluma) it is good to add a tablespoon of magnesium sulfate (available in pharmacies) to the soil, as it makes the sap bitter and therefore avoids the attack from part of parasites such as cochineal.
Winter succulents: Phytosanitary interventions
Succulent plants do not need special phytosanitary treatments during the winter months.
Keep in mind, however, that in the event of attacks by fungi or parasitic animals, treatment must be carried out with the appropriate drugs.