The Japanese glossary of bonsai: vocabulary, styles and sizes

Bonsai is a rich Japanese art form with centuries of practice. It comes with its own specific vocabulary, often used verbatim around the world. This article offers as comprehensive a glossary as possible of Japanese words related to bonsai, as well as an overview of existing styles (shapes) and sizes. A reference guide for both beginners and seasoned enthusiasts.

1. General terms of bonsai

Bonsai (盆栽) : A tree cultivated in a pot. Literally, "planting in a tray."

Niwa : Garden.

Niwaki : A garden tree pruned according to principles similar to bonsai.

Yamadori (山採り) : A tree collected from the wild.

Toriki : A tree collected with roots prepared for cultivation in a pot.

Ara-ki : A raw, unformed tree.

Prebonsai : A young tree in the process of being trained.

Bunjin : A poetic term, related to literati aesthetics.

2. Parts of the tree

Nebari (根張り) : Apparent ravine base.

Tachiagari : Base of the trunk between the sun and the first branch.

Miki (幹) : Trunk.

Edas : Branches.

Sashi-eda : Main branch.

Ura-eda : Rear branch.

Kiki-eda : Lateral branches.

Tenjin : Top of the dead trunk.

Jin (神) : Dead wood on a branch.

Shari (舎利) : Vein of dead wood on the trunk.

Ha : Leaf.

Shin : Apex, top of the tree.

3. Cultivation and shaping techniques

Metsumi : pinching shoots.

Mekiri : bud pruning.

Kirime : hard pruning.

Uekae : repotting.

Nemawashi : root pruning.

Sharimiki : creating deadwood.

Safamiki : splitting the trunk.

Wiring/Harigane : tying with wire.

Oshitsuke : shaping by constraint.

Tori-eda : removing branches.

4. Japanese Aesthetics and Principles

Wabi-sabi : the beauty of imperfection and time.

Ma : space, visual breathing room.

Shizen : naturalness, absence of artificiality.

Kanso : simplicity.

Fukinsei : asymmetry.

Yohaku no bi : the beauty of emptiness.

5. Bonsai styles (traditional forms)

Straight and classic styles

Chokkan (直幹) : formal right.

Moyogi (模様木) : informal law.

Shakan (斜幹) : sloping trunk.

Dynamic Styles

Kengai (懸崖) : waterfall.

Han-kengai (半懸崖) : semi-cascade.

Fukinagashi (吹き流し) : beaten by the wind.

Natural and poetic styles

Bunjin-gi (文人木) : lettré style.

Hokidachi (箒立ち) : hall.

Shocking : double trunk.

Sankan / Gokan : triple or multiple trunk.

Forest styles and landscapes

Yose-ue (寄せ植え) : forest.

Ikadabuki (筏吹き) : tree trunk lying down.

Ishitsuki (石付き) : roots on rock.

Sekijoju (石上樹) : roots clinging to the rock.

Saikei : landscape miniature.

6. Bonsai sizes (classification)

Very small sizes

Keshitsubo : 1–3 cm.

Shito : 5–8 cm.

Mame (豆盆栽) : less than 10 cm.

Small sizes

Shohin (小品) : 10–20 cm.

Komono : 20–25 cm.

Medium sizes

Katade-mochi : 25–40 cm (can be carried in one hand).

Chumono / Chuhin : 40–60 cm.

Large sizes

Omono / Dai : 60–120 cm.

Hachi-ue : very large bonsai, often old.

7. Jars and presentation

Utsuwa : pot.

Tokonoma :display alcove.

Daiza : wooden stand.

Suiban : shallow tray.

Kakejiku : decorative scroll.

Kusamono : companion plant.

Shitakusa : secondary grass.

Conclusion

The Japanese vocabulary of bonsai is inseparable from its philosophy. Each word carries an intention, an aesthetic, and a long-term vision. Mastering this lexicon allows you to delve deeper into the art of bonsai, beyond simply cultivating a potted tree.

This article can serve as a foundational reference, to be enriched through practice and by exploring different schools of thought.

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