mrbungalow

Kev,

I think your setup sounds interesting. We are in the middle of winter now, but the sun gets stronger every day. Pretty soon the conditions in your setup may become ideal.
The reason I think this, is that here in Norway, even in bad summers, many musa-seeds seem to germinate very easily outside or in a greenhouse. In Bergen, mid july, we can have 30 degrees C or 12 degrees C. Very variable. So I am not sure if the max-temperatures of 30 + are crucial for germination.

If you try Musa Sikkimensis for example, I am convinced these temperature fluctuations may be ideal. Even if it takes 2 or 3 months, this will somewhat replicate natural spring conditions in the himalayan habitat and you will almost certainly get higher max temperatures eventually. Musa balbisiana should be easy too.

Best of luck
Erlend

__________________