Olympian

Hello! One measure that I take in a cool environment is I put my pots or grow bags into bigger size grow bags. I stuff 'stuff' into the outer grow bag to help keep the soil a little warmer.

I have also been known to use styrofoam drink chests instead of an outer grow bag. The stuffed styrofoam chests seem to keep the soil warmer than the outer grow bag so you can experiment with what works best for your plants.

I have mine on wheels so that I can move them around to follow the sun to get more light and heat.

Also, perhaps if you would be able to put it next to a wall of your house, that might help it retain some heat and perhaps more sun light.

You can also consider putting a cold weather blanket made for plants over the plant during your coldest part of the day.

Maybe when it gets older, your Cavendish will be better able to adapt to your environment.

Good luck to you and your Cavendish!!!