For the most part, whenever I sow viable seeds the bulk of the germination occurs within a week of one another. By the same token, when a certain species of plant begins flowering, most of the others of that species, under the same conditions, also flower at about the same time. However, a packet of D. brevifolia seeds I sowed last year, while germinating at about the same time, has recently sendt one flower scape up. It has been a couple weeks, from this colony of plants, and only one plant has been inclined to do so. Here's a pic of the colony and the actual scape is still in the camera.