Knautia arvensis, also known as Blue Buttons, Field Scabiosa or Field Scabious, is a hardy perennial plant that produces delicate and stunning blue, pinky-blue, lilac, or lavenderish flowers atop 3-foot stems. This wildflower is native to meadows and grassy hills, particularly on limestone, and is perfect for wild gardens. Its roots and flowers have been used for centuries as a natural astringent and diuretic, and an infusion can be used as a blood purifier or externally for wounds and bruises. It is also a food source for the Marsh Fritillary and Narrow-bordered Bee Hawk-moth. This stunning plant thrives in grassy places and dry soils, and is easy to grow. Add some natural beauty to your garden with Knautia arvensis - Blue Buttons.