I have an outdoor shed and winters are cold here. I have a heater set to turn on at 21c and turn off at 24c. I know those aren't supposed to be optimal temperatures but the two plants in that shed are doing well - one of them has outgrown its 25 gallon pot and is overdue for putting on 12s. My point is though I'd like to have it warmer, the plants are still growing like weeds.
Hey there Rasterman, my findings have been similar, but I won’t speak to soon. It’s really cold today -1 all day and I’m ignoring the weather tonight… I popped their little humidity jackets of today so the can fight the good fight..
Oh I switched the small Tubular heater on also to keep Them around 21c And treated them a little tap water.