selfheal prunella vulgaris growing on a meadow

all allheal alternative antiseptic bloom blooming british calcareous canada common edible flora flower flowers foliage grassland heal herb herbal herbalism labiate lamiaceae leaves mauve meadow medicinal medicine natural nature naturopathy ointment ontario petals plant prunella purple rare reproduction scarce seasonal self selfheal spike summer sunny uncommon vulgaris wildflower wildflowers wildlife