this is just a short list to get you started, all other plants and trees have their own correspondances you can look for and use, or define from how you personally think of them.
Maple - love, kindness, wealth.
Oak - protection, fertility, strength.
Chestnut - love, longevity.
Hazel - truth, divination.
Pine - banishment, exorcism, purification.
Rowan - defense, creation, travel.
Paperbark / Birch - exorcism, protection, and purification.
Cedar - healing, psychic abilities, purification.
Apple - banishment, fertility, healing, love.
in general, if you dont know the species of trees you’re working with, you can use fallen leaves in spells/rituals to signal change, death before rebirth, shedding excess, and making room for growth.