I picked up a Musa Basjoo at my local nursery about 6 weeks ago and it has several suckers. My concern is that as the new leaves emerge and unwrap, they are turning a brown and dying off. This includes new leaves on the suckers. Some of the leaves are turning brown even before they unwrap. Any ideas on what I am missing out on or not doing?

I still have it in the planter it came from and am wanting to plant it outside, permamently, but would like to get this under control first.