I have bought these cacti about 3-4 weeks ago.
I am not completely sure if they are all 'cacti' as such, or what they are actually called either and so it would be nice if anybody knows.
I have never had cacti before and so I thought I'd try some.
The one with the pink top was going slightly brown and so i gave it a bit of water, as the soil was stone dry, but it kept on going brown and it is now almost completely brown and slightly soggy.
The yellow topped one has started to do the same thing now too.
The last one which i believe is a 'Jade', although i am not completely sure, is starting to shrivel up, and several 'leaves', if thats what you call them for this plant, have come off, some by me accidentally while i was carrying it, and some on its own. (They came off very easily)
I thought it could be the cold as, here in England, it is cold and i do not have the heating on long at all; it probably is around 12-15 oC in the day, but i do not know what it may be at night. There has also not been much Sun since i have bought them.
What should i do?