Angels Trumpet

Great color, I've never seen it in this color before :)

Beautiful flower Serenity!

I have a plant like this one. But the bottom leaves have all fallen off.
It's still blooming like crazy though.
Do you know what is causing this?
It gets morning sun and shade by mid-afternoon.

I am not sure what is causing the problem but I used Miracle Grow organic plant food and the flowers and leaves of my recent blooms are larger and healthier than that original plant.