“There are many examples of the elder tree being used in folk magic. Here is an old spell for using elder bark, for healing a skin infection called Erysipelas (an older name for this was St. Anthony's Fire), which causes acute fever, chills and raised red patches on the face, arms and legs: The blood of a bullfinch is put in a new vessel with scraped elder bark, then the whole is laid on a cloth, which is bound over the eyes overnight. The person suffering repeats this incantation: ‘I have two eyes, I bave two feet, Pain from my eyes go into my feet! Go from my feet, go into the earth! Go from the earth into death!’ Another elder remedy for the same ailment was to find a piece of elder wood onto which the sun never shone and cut it between two knots and wear it on necklace, as an amulet.
To make an enchanted walking stick that would never break and would bring protection to the one who used it, one could harvest elder wood on All Souls Day and hollow out the pithy branch to enclose these magical ingredients — seven vervain leaves, powdered wolves eye, a dog's heart and tongue, three green lizards, three swallows hearts and the fillings from ironstone. The stick was then capped with an iron ferrule.
Carrying an elder wood amulet was used to prevent rheumatism and silently sticking a piece of elder wood in the ground was done to rid of fever, by way of transference. A Danish remedy for toothache: Take a stick of elder wood and put it in your mouth. Then stick it in the wall while reciting the words: Depart thou evil spirit. Nine pieces of elder wood were strung onto a necklace and worn was a cure for epilepsy, as long as the necklace never touched the ground. A charm to cure convulsions in children was to find a magical elder that had been seeded by birds on the top of a pollarded willow. The father of the child must then, on a full moon, gather the twigs and make a necklace for the child. A wart could be cured with elder by pricking until a drop of blood came forth. This was dropped onto an elder leaf and the leaf was then buried, a simple transference charm. It was known in some parts that leaves gathered on the auspicious May Eve were used for wound healing specifically. Interestingly, horse people would sometimes catry an elder twig as an amulet against saddle sores.
Elder wood was historically used for protection, exorcising illness and for spirit conjuration. It is a tree that falls under Saturn's dominion. Whistles made from elder wood were used to summon spirits, magical pipes that they are. Elder was also used for darker magic, the leaves and bark were included in hex powders. The flowers and berries were used in protective mixtures. A very intense counter curse included making a 'frog' out of grave dust, powdered black spiders and elder sap. This poppet was to be baptized in the victim's name and pricked daily with pins for nine days to make them very ill.
Elder was thought to protect the home and farm as well. It was used as a charm against lightning, wreaths of branches were hung up in Germany after sunset to protect the farm. On the Isle of Man, elder wood was fixed above windows and doors to protect the house. An elder tree planted next to a cottage was supposed to protect a home from witchcraft, lightning and flies. Peasants would make wreaths of elder to put up on the infamous Walpurgis night in Germany so that they could see witches riding on brooms, dragons or goats. One protective rite using elder came from Styria, Austria. On Bertha Night (January 6th), the Devil was known to have great powers. If a magical circle was made, one could stand in the center of it with elder berries that were gathered on St. Johns Night, thus being protected against his influences. It is likely that these berries were green and under ripe, however their powers were for magical rather than medicinal use.
Elder was used in different ways to find malefic witches. A German belief was that an elder stick burned on Christmas Eve would somehow reveal who the witches were in the nearby neighborhood. A Colonial American belief was that if a piece of elder pith was dipped in oil, lit and floated on water, that it would point to any witch present. Another interesting belief was that anyone who was baptized and anointed with the juice of green elder bark around the eyes could see witches.”
A Folk Grimoire of Tree Lore and Practicun
‘The Black Earth Medicines of Autumn: Elder’