Hi, there, Thanks for enlightening me about at least one variety of moonflower. Sounds like one tough customer to me! Just about as tough as our local creosote bushes which grow in our local mountains, and are one of the reasons our hills torch so easily: most of the native chapparal is coated with various ketones and esters to prevent water loss. Since burnover is a natural occurrence in these parts, they regrow like gangbusters, along with ceonothus and toyonberry, when torched to the ground. Isn't nature marvelous?! Ron Learning something every day:)