Your cactus only has one ball? Prick it with a needle and baby pups will pop out nonstop

You have been growing your cactus for three years, so why doesn't it produce small cactus pups?
There are a great many cactus varieties, and I don't know which variety yours is, but some cactus varieties are very difficult to get to grow pups. It's not that they don't grow them, it's that they have to grow until they are especially large, and only once they are big enough and can no longer continue expanding their crown will they grow pups. Some even never grow pups at all.
A cactus grown for three years is too "lonely" - prick the top with a needle, and pups burst out in a ring around it
Of course, if you want your cactus to produce more side pups, we can control it artificially and just give it a helping hand. For example, if we buy an expensive or cheap cactus whose ball has already grown fairly large and we feel there is no need to let it keep growing, we can destroy its growing point, that is, pry at its top with a needle, or use a pair of scissors to directly gouge out the top growing point, the sunken core in the middle, and it will stop growing and directly produce enough small pups from the areoles along the sides. Generally, if you want your own plant to burst with side shoots, this is the only way to do it. Once the small shoots appear, you can sell them quickly and recoup your money fast!
Some gardening friends will say that we can buy budding hormone and smear it on, and then its side shoots will come out right away. But I don't recommend using it. Budding hormone is a type of hormone; after use, the side shoots that come out do not root easily, and it weakens the resistance of the mother plant, leading to reduced resistance, easy root rot and other problems. Previously, when many gardening friends grew cacti, in order to sell them quickly, they used budding hormone to produce side shoots. After buyers took them home and rooted them, the root system was very weak, and watering easily caused rot. Moreover, since they had been bought together with the mother plant, the mother plant also did not grow easily. In short, in one sentence, budding hormone is a stimulating hormone. It has no benefit at all for plants. Businesses use it to make money, but we ourselves must never use it!
Your cactus looks all alone? Prick it with a needle and baby pups will pop out nonstop!