What a pretty nasty. One of my favorite flowers of all times. While I was at the very painful family reunion this last weekend in Baker City area of Oregon I harvested some seeds of a Four O'clock. The flowers were a bright red with a fuscia center that gave that blueish florescent cast, much like the leaves of your nasty. Named for the fact that the flower petals remain curled up (looking a little like a hardy fuscia flower) until the sun is off of them around 4:00pm. Then they open up and shine in the evening light. A very beautiful sight. I'm going to be putting them into the ground here soon myself and seeing what I get in the spring.