I cut dead flower off plus curling leaves that look nearly dead. I END UP WITH MANY DEAD STEMS.
My Bird of Paradise Flowers but Does Not Last Long and Dies and Looks Awful
Certified GKH Gardening Expert
This could be a pH issue, or a fungal issue. To correct both, and add a little sulfur back into the soil I would recommend dolomitic lime and wettable sulfur. Here is an article on the care of the plant: https://www.gardeningknowhow.com/ornamental/flowers/bop/bird-of-paradise-an-exotic-flower-like-none-other.htm