Lots of nice desirable stuff there Peterb.
I noticed a drastic growth spurt in the M. tetrancistra seedlings I have here around the first of october. I have been misting them once a week since.
They and M. pectinefera solisoides just shut down completly around july, so I just left them completly dry all summer... so far so good.
At about the same time I lost 4 escobaria emskoetterianas due to, Im guessing, watering to late into its growing season.