What is the name of this plant? It has taken over my small area where I plant flowers. The flowers only open at night. I have attached a picture.
Hello, I suspect this is Oenothera biennis, commonly known as common evening primrose. Oenothera biennis from the USDA Plants Database and a few photos from PLANTS to compare with: Photo 1 Photo 2 It could also be a different similar-looking Oenothera species, but almost certainly an evening primrose as opposed to anything else.
Thank you so very much. Now I know that it isn't just a pretty weed. This has just grown so large, maybe it likes our heat and humidity that we have down here.