FlytrapCare Carnivorous Plant Forums

I have a large (5 feet) pitcher plant (Nepenthes) that lives in a screened porch in Southern Florida. While it continues to grow taller and gets many new pitchers, I see more of the older pitchers getting brown and drying up. See photo.

I water the plant (in pot) weekly – tap water. I mist the entire plant daily. There seems to be water in the pitchers. I do not fertilize. The leaves look healthy. I cut the badly dried out pitchers off periodically.

What can I do to improve the health of the plant?

Thanks.