The easiest ball cactus to care for is the Echinocactus grusonii. Although it is difficult to get it to flower, its round shape makes it look great. Echinocactus grusonii is not poisonous. Only its spikes can become dangerous.

Echinocactus grusonii is not poisonous
Like almost all types of cacti, the Echinocactus grusonii belongs to the group of succulents that store water in the body. It does not contain any toxins, so you can keep the cactus indoors without any problems.
However, caution is advised with the often very pronounced spines. Therefore, always wear gloves when grooming and wrap your body in a terry towel.
Set up the spherical cactus in such a way that neither children nor pets can injure themselves.
tips
The Echinocactus grusonii is one of the few types of ball cactus that are suitable for indoor culture. The care is not expensive. The only difficult thing is finding a good winter location.