Most cacti can be encouraged to flower with a little "shaking" in winter and early spring.
If the plant stubbornly does not bloom and is withering, then one simple action will wake it up. Even experienced florists and biologists recommend it.
What do cacti need?
The trick is not in feeding and special watering. Each plant goes through a certain cycle. For example, cacti will not bloom if they are constantly in the warmth. In winter and early spring, it is useful for them to be kept in a cool room.
Temperatures below the usual +20 …25 °C serve as a signal for cacti that spring is coming soon. As soon as warm days come and there is plenty of sunlight, the plants will bloom.
Temperature conditions
The first and most important rule when keeping cacti in a cool room is to stop watering. Especially if the temperature is below +10 °C. There are some species that need lower temperatures – about +5 °C.
For example, rebutia, lobivia, pseudolobivia, sclerocactus, pediocactus, tephrocactus and others.
But for ferocactus, eriocactus, frailey, and some gymnocalyciums, it is better to provide a temperature of +15 °C. It is also important that the room is light and dry.
By the end of winter, cacti often become smaller, shrivel up, and some of them, such as lophophoras, become soft. This is normal.
In spring, after careful watering, the plants, feeling the moisture, will grow new roots, become saturated with water and acquire their previous appearance. And those specimens that have reached the optimal age will delight you with gorgeous flowering.
