Another name for this annual is "poor-man's weather glass", which refers to a characteristic of closing its flowers at the approach of bad weather. It originated in Europe, but can now be found across most of the North American continent. Scarlet pimpernel is a delicate, low growing plant that is most often confused with chickweed. Its pointed leaves are attached directly to a four angled stem. They are opposite each other in groups of three. Flowers are bell-shaped and salmon colored with five petals. Scarlet pimpernel is a member of the primrose family.