Most fruits and nuts do have magickal associations, flowing from legends and myths. This ancient knowledge has been lost but not forgotten. Below is an alphabetically ordered list of fruits and nuts with meanings in relation to spell-crafting and witchcraft.
Acorn - wisdom, protection, luck, prosperity
Almond - prosperity, wisdom, healing
Apple - love, plant magick, fertility, hidden knowledge
Avocado - passion, love, beauty, youth
Banana - fertility, prosperity, abundance, masculinity
Blueberry - protection, grounding
Brazil Nuts - love, sex, relationships, newfound partnership
Cashew - prosperity, wealth, abundance
Cherry - happiness, divination, to gain or lose a lover
Chestnut - love, romance, warmth, passion, desire
Fig - fertility, love, divination
Grape - fertility, psychic abilities, prosperity, abundance
Lemon - friendship, love, purification
Lime - healing, protection, harmony
Olive - fidelity, marriage, fertility, partnership
Orange - happiness, purification, divination
Pecan - prosperity, harvest, abundance, wealth
Plum - healing, peace, youth, beauty
Pomegranate - fertility, divination, luck, prosperity
Pumpkin - lunar energy, divination, psychic abilities
Strawberry - luck, childbirth, success, youth
Walnut - spiritual growth, luck, wisdom, grounding
*This information has been gathered from numerous sources including blogs, books, and personal experiences.*