Definition
Red pimpernel (Anagallis arvensis) is a low-growing annual plant known for its bright red or orange-red flowers. It is also known as the scarlet pimpernel. The small, star-shaped flowers open in sunshine and close in cloudy weather. It's commonly found in fields, gardens, and along roadsides. Some consider it a weed. Think of it as a tiny, weather-forecasting flower βοΈ.