Introduced in 1848, this wonderful autumn flowerer produces heads of striking, rounded, pink blooms with golden stamens. You can grown them in sun or part-shade and they can become invasive. This is what is says in the books, but mine, (I have had it a few years now), has hardly grown at all. I was hoping for a mass of pink flowers spread across the flower bed. No such luck - the plant is exactly the same size as when I put it in. Not one of my better successes I'm afraid.
The back of the flowerhead is almost as pretty as the front
This cactus-type Dahlia has such a large flower head, as big as a side plate, that I couldn't find a vase for it, so I snipped the stem to a couple of inches and have floated it in a dish. It looks stunning, don't you think.