According to tradition the apple was the fruit which was used by the Devil to tempt Eve in the Garden of Eden. Cleaning the fruit prevents any form of connection with the Devil.
The fruit was offered to the Norse gods to preserve youth as the tree is associated with fruitfulness in all forms, so to fell the tree was extremely unlucky. Leaving an apple on the tree, or having a tree which flowers out of season in Britain meant a family death, but in Europe the opposite was true. Throwing the peel over the shoulder would enable a young girl to find out the initial of the prospective husband by looking at the shape of the peel on the floor. Although if the peel breaks she will not marry.
On St. Thomas's night in Austria counting the number of seeds in an apple was thought to indicate how long a girl would have to wait to marry. Even numbers meant a forthcoming marriage betrothal but cutting through the seeds would indicate a problematic future and the girl being left a widow.
Tossing the seeds one-by-one into the fire was seen as another method of finding out whether a man loved you according to European mythology for the woman who has many lovers. If the seed pops then the man concerned is certainly in love with you, but if there is no sound the opposite applies.
Leaving a few apples on the fllow under the tree is thought to keep the spirits happy in Europe, it is also said in England, to ensure good harvests, leave the last apple of your crop for the Apple-tree-man.
Diviners in search of water hidden underground are known to often use forked branches taken from the Beech tree traditionally called ‘Wishing Rods’ (also Apple, Hazel and Alder).