POLYGONACEAE, The Buckwheat family
Also called Polygonum orientale
Eireann and I saw this fabulous annual along the sidewalk at Buffalo Gardens on Alberta, a happy little place where chickens and dogs roam free. A giant relative of knotweed and smartweed, this one grows 4 to 6 feet tall. The long pink flower spikes dangle down around its sturdy stalk. It’s considered an old-fashioned cottage garden plant, and while it is great in the back of the border, there are lots of creative uses for it. It would make a gorgeous contrast to dark red sunflowers. Plant it in full sun. The seeds need a cold period before germinating. It can be used as a cut flower.