I planted some seeds of this plant, D. petraeus a few years ago and noticed a startlingly high germination rate. The plant does look very nice and the flowers were profuse and lasted quite a while. What a mistake!!! I let the darn things go to seed and now it has spread most alarmingly. Even a small seedling has a robust root system making plucking them out not doable unless it is very small. I have had to resort to Roundup but these plants keep coming up by the hundreds. I think this is a plant that will take the top spot of plants i wish i never let go in my garden, i fear i may never get rid of it. I would caution anyone that is contemplating introducing this plant to be careful or, better yet, just don't do it. I have an interest in trying some of the other more choice species but this experience has me spooked.
Jim
