Musa Basjoo is the hardiest of all bananas. Cold hardy to -10 degrees when mulched properly. In warm weather months it can grow up to 2 feet in a week. Its mature height is 18'.
It can flower and bear fruits at 10' or whenever it has 35 leaves. The bananas on this variety are not edible.
This handsome broad leaved variety can be grown in most states since it can handle temperatures of 15 to 20 degrees Fahrenheit if the ground is mulched properly in the very cold months. At 40 degrees it will stop actively growing and at 28 degrees the leaves will die back and the tree can be cut back to a 2' height. It will grow back rapidly as the warmer season approaches and after the last frost.
To plant and growBanana plants & trees in the Pacific NW.You will need to mix top soil (potting soil) 50 / 50 with a sand & small gravel mix and have the root ball raised about 1/8 out of the hole but mounded up with the soil mixture... I recommend using a water meter the first year. For more information on the planting and care click on this link http://www.hookedonpalms.com/faqandhelps/plantingcare.html
Bananas are heavy feeders so we suggest that you fertilize lightly every two to three weeks, with the exception being that you do not fertilize if you are not seeing active growth. Ideal Growing Conditions: Grow bananas in BRIGHT LIGHT.12 hours of bright light are ideal for most varieties. However if grown in full sun, they should receive more water than if grown in 50-80% shade as the sun will suck the moisture out and the leaves will fold down during the hottest part of the day.Keep in mind that the sun?s hot rays can sometimes burn the leaves of full-sun grown bananas. If you wish to keep your banana plants looking excellent at all times, I recommend growing them in about 35-50% shade. They will not grow as fast in shade and will take longer to bear fruit but they will always look perky, pretty and very healthy. Bananas like constant warmth, the ideal night temperature would be 67 F. The day temperatures would be in the 80s. Ideally you would have fresh circulating air. Bananas like High Humidity 50% and higher are desirable. Hot, dry air will damage the leaves.
With that said many bananas grow in areas that are not ideal and do quite well.