Fat plants

Cactus widespread white spots

Cactus widespread white spots

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Question: cactus white spots spread

I moved a large flat cactus from the shade to a sunny corner and covered it with clear spots, what happened?

Answer: widespread white cactus

Dear Marzia,
It is true, all those who talk about succulents and cacti advise placing them in full sun, even on the pages you can read this type of advice; apart from the fact that, since the succulent plants and cactuses belong to hundreds of different species, which therefore have slight differences in cultivation, the plants remain living beings, and unfortunately it is not easy to generalize. Many cacti in the countries of origin live in very hot and sunny places; pity though that the same identical plants, in our home or in the nursery, are kept for months in partially shady areas, with a few hours a day of direct sunlight, or even none. So when we move these plants to the sun, we will have to do it gradually, allowing the plant to get used to the direct sun. In your case, you say that the plant was placed in a shaded area; so if you want to keep it in the sun, you will have to place it first in a partially shaded area, and then move it more and more to the sun, as the days go by. This type of movement should then be done in February-March, so that the sunlight received by the plant is not immediately the summer one, which also burns the arms of a bricklayer accustomed to the sun, but that of early spring, to which we could we also expose ourselves without sun protection. Therefore, it is very probable that your plant has been burned; typically the burn marks on cacti are white and opaque, and look almost like a patina; often the plants, before reaching to get burned in this way, tend to redden. To allow your plant to survive, move it to half shade (if you have not already done so), and allow it to receive only the sunlight of the early morning hours, when it is still hot but not boiling.