- apex - the tip of a tree or branch
- bonsai - Japanese term for the the art of cultivating and training a plant to create the illusion of a dwarfed tree.
- bonkei - tray plantings containing stones, trees, plants and figurines
- branch bender - a clamp or jack used to bend branches or trunk
- branch splitter - a cutting tool used to divide branch or trunk to allow it to be bent more easily.
- broom style - A training form for bonsai which resembles an inverted broom with a single trunk dividing into many symmetric branchlets which subdivide into twigs and so forth. See Hokidachi
- bunjin - Japanese term for an educated person or literati, a tree grown in this style, usually emphasizing a thin trunk, with a lean appearance and container with rough-hewn appearance.
- callus - The raised roll of tissue that forms as a wound heals and closes
- cambium - The layer of tissue between the xylem and phloem, where new wood is formed.
- chokkan - Japanese term for the formal upright style
- clump style - see Kabaduchi
- concave cutters
- cutting - a bit of a plant that has been cut and rooted. A means to propagate.
- deciduous - a plant that sheds its leaves and enters a state of dormancy annually
- eda - Japanese term for branch
- evergreen - a tree that does not shed its leaves in winter
- fungicide - a chemical used to combat the growth of fungus
- graft - to join a stem of one plant with another so they grow together. Grafting is used both to propagate plant species and to add foliage where none previously existed on a bonsai.
- grafting knife
- han-kengai - Japanese term for semi-cascade - See also Kengai
- hokidachi - Japanese Term for Broom Style
- ishitsuki - Japanese term for root-over-rock style
- jin - Pronounced JEEN - Japanese term for snags of deadwood on the ends of branches or trunk.
- kabaduchi - Japanese term for clump style bonsai
- kengai - Japanese term for cascade style. See also han-kengai