Red Birds in a Tree | Sometimes common names are a good descriptor of plants and this one is spot on. The flowers of Scrophularia look just like tiny red birds sitting in a tree. This plant drives hummingbirds nuts and it is hardy to zone 5! This is a good lesson in cold hardiness doesn't mean hardy to this area in every circumstance though. This plant is native to the Southwest. Think hot and dry. It can survive winters colder than we have here in the Kentuckiana area but it is going to give up the ghost in our wet soils in the winter. The plants we have for sale are small but getting ready to put up their first flowers of the year. If you site this plant in a rock garden or area of your garden where you have amended with lots of gravel to prevent excess moisture in winter it may very well come back for you and form a small shrub over the years. Another good experiment with overwintering this plant would be to grow it in a container and bring it into an unheated garage or building to keep it from being rain and snowed on all winter. If you are a lover of hummingbirds this is a great plant to experiment with!