First look up your gardening zone, you can do that here
I'm in a confusing area, slightly south of Seattle, however I've created some what of a microclimate in my backyard so I can grow a few tropical and exotic plants.
I planted my Banana trees August 19th 2015, I bought them from my local nursery on clearance and didn't know if they would make it through the winter since I was planting them so late in the season. They were pretty much done for already, but I always like a garden challenge and the challenge of bringing plants on the brink of death back to life....
When I planted them they were all about a foot tall.
This is what it looked like Aug 2015
and what it looks like now....
It had many pups (new shoots from the base) now there is about 5-7 banana trees total from the one, the mom stands about 6-8ft tall. I winterized them last year and obviously they survived so I'm going to do it the same way as I did and hope for the best, that they make it until next spring.
So today is Oct 17th 2016, lets get started preparing for the next couple weeks.
First any dead or yellowed leaves I cut and lay at the base of the stalks, (also save any other leaves in your yard you might have, I collect my neighbors maple tree leaves to use for mulch, as long as they aren't diseased or have fungus/mold on them,they will come in handy later)
this will help keep the bases and soil protected from the upcoming freeze.
I will not do anything else until the first frost happens, usually around Oct 31st in my area, wait until you get the frost first.
Looking forward we will be cutting all the leaves off, so in the meantime enjoy the beauty of these plants while you can.
The following photos are where we will be cutting the leaves off at the stalk:
Here is the stock with the leaves
this is where we will be cutting
You will cut at an angle to let the stock "weep" the moisture out.
This is it for now, DO NOT CUT THEM YET! Wait until the first frost happens!
In the mean time, gather up:
clean leaves (no fungus or mold on them, they can be wet)
old blankets/sheets or burlap bags ( I use burlap coffee bags, its Seattle, they're everywhere)
a bail of straw (local feed or home improvement store,keep it dry, don't buy it until the day you cut the trees, we need it dry)
and depending on how tall your trees are either tomato cages or chicken wire.
Now sit back and enjoy them for the next few weeks and I will post the how to cut/mulch and winterize these Bananas!