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Old 08-21-2010, 11:48 AM   #6 (permalink)
palmtree
 
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Default Re: Bananas in a Greenhouse in SE Michigan

I definitely think its really possible to get bananas to fruit in the greenhouse. But to keep spidermites and other pests from taking them over during the winter, you should spray the leaves with neem oil maybe once every 2 months or more if necessary (and the best part is, neem oil really works against pests while being completely harmless to eat despite the terrible smell). Also keeping the temperature down to maybe the low to mid 60s during the day in the winter and low to mid 50s, mid 40s the absolute lowest at night will keep them warm enough to stay alive while also keeping pests from being so active. You also wont have to water them too much in those type of temperatures. You should get a greenhouse that has a lot of windows that can open for those really nice spring days and maybe all summer long (with the exception of a cold night or cool day in general).
Remember when you get this greenhouse to make it bigger than you expect you will need because you want to give your plants plenty of room to grow and its also nice to add other tropical plants (including your favorite fruits) to your greenhouse. Just make sure you dont plant anything that can get taller than your greenhouse (I think 12 feets a good height and 14 feet should be about enough to accomodate the medium sized bananas). You can put any or most of your potted plants during the winter, in your greenhouse. Good luck and post some pics when its done if you decide to get a greenhouse!!!
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