Hi
looks like either a bird of paradise of one of it's relatives ,or might be a Calathea?? Would suggest repotting and a shady summer out doors. If a BOP definitely needs a lot more light. gary

It's a white bird of paradise. It's most likely browning because it is very root-bound and can't take up water to support that much foliage. You don't show a climate zone by your user name and that's a problem when trying to help someone with a plant issue.

If you are in zone 8b or above, plant this in the ground and keep it watered. If you are in a zone below 8b, plant them individually in garbage can-size planters and drag them into a warm and well-lit spot over the winter.

They will need fertilizer after you get them re-potted and they have become established - a month or two.

Thanks for your quick replies! I'm actually in New York and the plant has been indoors since I got it. I'll have to get another pot for it until I can find a suitable location. Any ideas on how to keep it from growing too much without harming it?
Thanks!