I had grown this anthurium for a couple years and had a nice medium sized plant and thought I was doing a decent job growing it. I was wrong…Then a few years ago we visited the Hilo Botanical Garden and they had this thing in all its glory. (See mature plant photo) I still can’t sleep at night.
A. cupulispathum gets huge, but has a rather thin textured leaf. This is a real collector’s plant. Very hard to find. The plant available is about 2 ft tall.