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Cactus rot

Cactus rot

Question: cactus rot

I have a column cactus for 6 years, about 1.60 meters, for almost 1 month it has been tilting because at the base it has taken on a dark color and on one of the sides a rather dry cavity is forming. What can I do to heal it? Thanks


Answer: cactus rot

Dear Caterina,

unfortunately the cacti are not at home in Italy, and are therefore subject to diseases that would hardly affect them in their places of origin. In the case of your cactus it is probably a bacterial or fungal infection, which if left untreated can destroy the whole plant. Unfortunately, this type of problem is one-sided, so it is impossible to recover the already diseased part of the plant. You will therefore have to equip yourself with a nice sharp and disinfected knife, and a lot of courage, and cut the cactus a few centimeters away from the now dark area. Make sure you reach a part of the stem that is completely healthy, without even a dark speck, and remove all the diseased part. If at the first cut you have to cut a part that is dark inside, disinfect the knife before cutting higher.

The completely healthy part of the cactus will be sprinkled with a common fungicide and placed in a good fresh and healthy soil and rooted; it takes some time, and surely your plant will become much smaller than it is now, but if you leave it like this without doing anything it is doomed to die, as the disease will spread throughout the plant.

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Video: cactus rot (October 2021).