r/cactus

In order to know how to properly care for it, I need to know what it is... The issue with that is my sister won it with a succulent [in the same pot] at a work party; the succulent was rotted and dead but Ive managed to save this one and its color is coming back now from the wilted yellow/brown it was... she said it was mostly "blue" when she got it, but it was nearly dead when I came upon it and brought it home so I can not confirm that..

I will be re-potting it tomorrow now that Im certian it will live, and am really hoping to get it properly identified so I can properly plant it in the best soil for it and care for it.

Thank you in advance for your time, and Im very open to care suggestions for indoor growth!!

All of a sudden my beautiful cactus is acting sick... We moved about 8 weeks ago and since 3 weeks he looks like this. He has the same amount of light an water as in the old house. Maybe it a little more humid here in this house, but nothing extreme...

I saw today that he's growing a new baby, but still... What is wrong with him and what can I do?

Thanks for helping!

Side sprouts (?) made him lie to the side like that. Any way to salvage?

I'm a beginner with everything plants and was given these cacti about 1-1.5yrs ago. They don't look very healthy and I'm not sure how to make their condition better.

I've kept them at my windowsill their whole life but recently learned the elongated and slanted shape (for reference, the 2 smaller cacti were tiny balls when they were bought) is due to lack of light, so I've recently been putting them outside for the day/most of the day. For their watering, I basically ignore them for a couple months and then give them a huge water, and repeat.

But now I'm wondering if they need re-potting, and/or to be in a larger pot. Do 5 cacti need a specific size pot to be together? My green thumb grandma suggested layering rocks and newspaper under the soil for drainage, that's why they're in a glass pot with no holes at the bottom. I'm open to any criticism, I'm very new to cactus care and would really appreciate any advice.