The small scarlet, white, or purple flowers of the plant called the scarlet pimpernel can give you a better weather prediction than the radio or TV weatherman.
If you are in the woods in the morning and you see the flowers on this herb close up, you will know that rain or cloudy weather is coming.
If, however, the petals are opened up, the day will be sunny and fair. Because of its unusual powers, the scarlet pimpernel has been nicknamed “the poor man’s weatherglass.”