I have a small Argyroderma I picked up from the local plant store, but I'm not sure when and how much to water it.
It is potted in a tiny (roughly 2" cube) pot that appears to be filled with a sandy, stony material.
I watered it once, a new leaf grew in, and the outer leaf shriveled up into a tiny brown mess. It was pretty cool, but it's been a week or so and the new leaf is starting to shrivel a bit.
Some of the internet says to "water when shriveling", but other places I've read "every couple weeks", and some other places (sorry, no links) said a few times per year!
How often should I water it, and how much water should I use? If based on shriveling, how long should I wait between waterings to see if the shriveling is reduced?