I used to be pretty negative about Echinopsis flowers. They'd show up and then be gone almost before you had a chance to see them. Nice, but hey? But then there some of the cultivars! This old standard is 'Stars & Stripes', a Paramount hybrid. This flower lasted a full 2 1/2 days and wow! And, even better, the flowers just keep coming and coming. I wish I had more room in the greenhouse.