Illia

Temperature for happy growth should be a minimum 68 degrees during the day, no lower than 50 at night. You really shouldn't give them much water at all unless they're getting plenty heat and light.

bananas101

My heater is set to 60 degrees, and day time temperatures on a sunny day reach 100. The banana's that I potted up are sending out new leaves after I cut them back. I dont water them much, just enough to not dry out. Also, I suspect having high humidity in my greenhouse may be triggering their growth spurt. I have no grow lights and a 50 percent shadecloth covering the greenhouse.

LOL, I would suggest purchasing top brand grow lights, but the added expense to your power bill would alert authorities that you might be growing pot. With the addition of reflectors, that might perk their interest in what you are growing as well.

Hammocked Banana

Ya since your nanners are just sitting on the stones on the ground there, I bet their roots are just too cold to grow. Try elevating the pots or putting them on styrofoam or something. Putting a thermometer in one of the pots or at least at ground level near the walls of the ghouse was a good idea.

designshark

I wonder how the wood burning greenhouse is fairing these days?

hasty22

Hello. Mine did the same thing inside the house. I leave my main musa basjoo outside all winter covered up where it does fine. I am wondering from looking at your photos and my plant I tried to overwinter indoors is maybe we are putting plants in too big of pots, where they store too much water, and causes rotting. Maybe next winter I will try a couple of pups in 4 inch pots.
Keith

Illia

All my indoor bananas are in a minimum 3 gallon pot each, (max 5) even the tiny pups. I've got some very poor lighting in my room and they're doing very well. I really do think that high enough temperatures are a big thing to consider.

hanabananaman

I think Hammocked Banana has the right idea, the ground is cold and sucks the heat from the pots. Styrofoam is a good idea and the higher off the ground the plants are the better. I bought a couple of heated mats years ago that work wonders if you want to go all out. The mats can be used for germinating in the spring.
Good luck
Larry