The cactus was frozen and softened outdoors. Can it be resurrected? If so, what can I do?

Judging by the eyes, if the stem is completely frozen and transparent, it will come out with a pinch of your hand, or it will sag inward directly. The stem tissue is as soft as baked sweet potato, and it will definitely not live, so it can only be pulled out and thrown away.

On the other hand, if most of the stems of cactus are still tough, but only a few at the top are frozen, it can still survive. We will move it indoors at room temperature and wait for a while. After about 3-5 days, we will cut off the frozen parts and coat them with carbendazim. When the temperature rises in spring, new buds will sprout again.

Extended data:

If it is in the northeast or northwest, cactus can hardly survive in winter if it is placed outdoors for one night, because few cacti can survive the low temperature of-20-30℃ (few exotic species can), and they will be directly frozen into a pool of "soft mud".

Under normal circumstances, the cactus with yellow flowers that we usually see doesn't matter if the temperature is as low as -5- 10℃, so we throw it outside for cultivation. Even slight frostbite can be repaired by itself, leaving some scars at most.

Of course, the frost tolerance of cactus does not mean that all cactus plants are frost tolerant. We must make it clear that cactus, cactus columns and the like should not be frozen outside, or they will freeze to death directly.