Cramp Bark is also known as Black Haw, Dog Rowan, High Cranberry, King’s Crown, May Rose, Red Elder, Rose Elder, Silver Bells, Snowball Tree, Water Elder, Whitsun Bosses, and Whitsun Rose.
As its name implies, cramp bark is used to alleviate cramps and spasms.
It can be used in fertility spells, and also in the sick room for certain illnesses, such as mumps.
