Purchased from Lone Pine Gardens, Sebastopol, June 2016. It already had a four inch bud, which I was thrilled to be able to preserve with careful packing in the suitcase committed to Delta's hold across country. Three days later, the bud had grown to 11 inches and opened in the late afternoon.
9 inch pot, 10 inch tall cactus, 11 inch flower
900 shots over 40 hours. Two to three minute intervals.