We didn’t get any flowers on our Argentine Giant cactus last year although every year before that since we planted it, it had at least one flower. This year, it definitely is back to flower production, this one being the first to open with several other bumps on the cactus that look like they are going to be flowers.
I took this photo late this afternoon when the flower was almost completely open. Maybe we will get nighttime pollinators again like we did two years ago. Click on the image to enlarge.