Echinacea, or hedgehog flower as it's called in England, is a close relative of the rudbeckia. It makes a striking appearance, with large pink flowerheads topped with huge prickly cones of stamens, which are attractive to bees. Besides being a very cool addition to a more adventurous garden, echinacea is medicinally prized for it's immune boosting properties. Originally used by Native American for healing, the herb is now used at the onset of colds or flus to lessen their severity. No herbal flower garden should be without it, provided you have ample space and sun.