Hi, I have 2 banana plants which I have brought into the house during winter as it gets to minus 15 sometimes in Gothenburg, Sweden. It is quite dry in the house during winter and the temp can range between 16 - 24 degrees celsius. Is this right for the banana plants? If not, I have a basement where it can go down to 10 degrees sometimes although I can put artificial light to support the few hours of daylight we receive. this doesn\\\'t of course increase the temperature. what is the absolute minimum and maximum for banana plants indoors? thanks Selly
Certified GKH Gardening Expert
IF the goal is for this to produce fruit, you will have to keep strict conditions for the plant. You will have to spray for extra humidity. If you can, you will want to keep the plant between roughly 20-26 celcius. This will ensure that it continues to grow and prepare for fruit.
As for light. This needs bright filtered light. You can use lamps with either CFL or LED, but not standard incandescent bulbs for supplemental light. They would prefer around 8 hours of bright light per day. If you wand to keep the plant alive and don't expect fruit, then you can fall outside the recommended temperatures.
Here is an article that will give you more information: https://www.gardeningknowhow.com/edible/fruits/banana/indoor-banana-plant.htm