Ten Yarrow leaves are plucked, the tenth is thrown away, and nine are put under the pillow to dream on. If a woman dreams, she is supposed to see her future husband in her dreams, & vice versa with a man. The plucking takes place quietly, no one is supposed to see the person plucking the Yarrow leaves. While plucking each leaf the following words are said
Good morrow, good morrow, good yarrow
Thrice good morrow to thee
I hope before this time tomorow
Thou will show my true love to me."
This custom often took place on May eve also.
Some old people will not go out on Hallow Eve night, as they believe the fairies have power to show themselves to the people on that night.