Recently me and my friends have all got cacti and none of us really have the skill of looking after them.
Some of the internet says once a week but others say once a month. I don’t really know how often to water it but it seems to survive and tbh I only water it when I remember (not often or regular at all) it can be three times in a week or three times in a year…
Also where do you keep a cactus? they need light… a window sill is good I think they survive well inside due to low humidity.
Tip- some are spiky so don’t touch the spikes
Fact- the tallest cactus is over 78 feet tall