Cunningham's Encyclopedia of Magical Herbs - Scott Cunningham 1985
Bladderwrack
The Herbs
(Fucus vesiculosus; various other
plants) P N H
Folk Names: Bladder Fucus, Cutweed, Kelp, Sea Spirit, Seawrack, Seetang, Meeriche, Sea Oak, Black Tang
Gender: Feminine
Planet: Moon
Element: Water
Powers: Protection, Sea Spells, Wind Spells, Money, Psychic Powers
Magical Uses: Seaweeds generally give protection to those at sea, or those who are flying over it. Therefore, intercontinental travellers should carry this plant. It is also used in sea spells to summon the spirits of the sea, by throwing it onto the waves and calling them. This will gain their favor and they will aid your magic.
Kelp is used to summon the winds: Stand on the shore and hold a long strand of the fresh seaweed in your hand, whip it around in the air above your head in a clockwise direction and whistle. The winds will come.
Make an infusion of the plant and scrub the floors and doors of a place of business to attract customers and bring good vibrations into the store. Also use in all money spells. A particularly potent spell entails simply filling a small jar with whiskey, placing some kelp in it, capping tightly, and placing this in the kitchen window. This will ensure a steady flow of money into the household.
Bladderwrack is also used in sachets to increase psychic powers and is carried to protect against mental derangement.