I’ve had my cactus for over a year now. I bought it late winter/early spring (February/March?) and from the time I bought it to around a month ago it had very stunted growth and didn’t grow any new spines. I used to water it roughly every 3 weeks, because I I knew that cacti don’t need watering as much as other houseplants. However, in the past 2 months I’ve increased this to every 2 weeks and it has grown new spines and significantly increased in height. I was happy to see this of course, but the new stem looks really thin compared to the lower half. Do I need to increase its water intake even more?
Also if anyone can tell me what species or family my cactus belongs to I’d be really grateful!