Invested in a very large and beautiful areca palm. It's looking lovely, except it's sprawling far too wide. I've looked on YouTube and most there have a very obvious fairly wide central trunk/stem thing, then thinner stems around it. Mine doesn't have the central bit, just lots of very thin stems so I think support is the issue. Should I tie it around close to the base to try to contain it? I got it in B&Q and they all looked fairly similar.