Oct 1: running out of time but they are putting on weight.
A friend grew a six foot tall Membrana Hiper yielding 10 ounces dry. Mine won’t be that big but they’re doing alright.
Oct 6: watered with warmed (25 C) water while it was only about 5 C air temp this morning. Final days in season but a few plants can/should keep going a bit longer.
@Inganjawetrust, thanks. It would have been better to start earlier but the ones started in early May got badly hit by frost when young. These plants started in June won’t reach their full potential, but I’ll give them another try next year too.