This season, the most fascinating plant to me is the moonflower vine. A dear friend gave me one this spring after we both fell in love with them last year. It had to be special ordered and of course, arrived in pretty poor condition after being sent through the mail. I bought an orb for it to climb and it quickly became healthy and took off.
This is a vine with big leaves and huge white flowers (about 6 inches in diameter) that bloom only at dusk. Each bud blooms once and literally, if you blink, you might miss it. Once the morning sun touches the flower, it closes, shrivels up and falls off. I have had bloom after bloom on my vine and it's fun to watch them open up. They are such interesting plants!