The flowers on this Echinopsis at the UC Botanical Garden are big and beautiful. Looks like the ones on the bottom are blooming now, and the ones at the top, sticking out like spokes on a wheel, will bloom later. I didn't measure, but those flowers must be at least 4" across. It seems to do fine with our wet winters, although, as a cactus, this plant doesn't need too much water. Some species are small and good for growing inside, but this one is tall and impressive.