盆栽の世界 — 小宇宙を育てる日本の芸術

Bonsai is the Japanese traditional art of planting trees in shallow pots and shaping them into miniature forms over long periods using techniques like pruning, wiring, and repotting. It is generally said to be an art that condenses the dignity of mountain-water landscapes or aged trees into a single pot, expressing a "small universe."

Bonsai's origins trace back to Chinese "penjing," and by the Tang dynasty it was already enjoyed among imperial family and literati. It was transmitted to Japan during the Kamakura era (12th-14th centuries) via Zen monks, and was initially called "bonsan." During the Edo era it spread to samurai and townspeople, and through the Meiji and Taisho periods the modern designation "bonsai" and its system are said to have become established.

The species used in bonsai are highly diverse, but they are generally classified into four groups: "shouhakurui" (conifers, which keep leaves year-round); "zoukirui" (deciduous broadleaf, which let you enjoy seasonal change); "hanamono" (flowering type, appreciated for blossoms); and "mimono" (fruit type, appreciated for fruit).

Bonsai defines many "tree forms" based on trunk shape, with four classical styles considered basic: chokkan, moyougi, kengai, and bunjingi. Imitating the form of aged trees that grow in harsh natural environments is generally thought to be the archetype.

Specialized tools are essential for cultivating bonsai. Basic tools include pruning shears, branch cutters, wire, wire pliers, and rakes — and especially "wiring" is generally said to be one of the most important techniques characterizing bonsai. Copper or aluminum wire is wrapped around the trunk and branches to gradually guide them into the desired form over time.

The "Omiya Bonsai Village" in Kita Ward, Saitama City, Saitama Prefecture is an area called the world's spiritual home for bonsai enthusiasts. It is said to have been formed when Tokyo's bonsai professionals migrated here following the 1925 Great Kanto Earthquake at the end of the Taisho era, and multiple bonsai gardens are still concentrated here today. In 2010 the "Omiya Bonsai Art Museum, Saitama" opened, and many visitors from abroad are reportedly visiting as well.

Since the first "World Bonsai Convention" was held in Omiya in 1989, bonsai has shown international expansion. Held once every four years in various world locations, this convention gathers enthusiasts from dozens of countries, and "BONSAI" has now become an international word. The boom continues centered on the USA and Europe, and it is generally said that masterpiece specimens being priced at several million to tens of millions of yen per pot is not uncommon.

The greatest characteristic of bonsai is generally said to be that it is "an art of time" requiring decades to hundreds of years to complete. Many of those called masterpieces have been passed down from the Edo and Meiji eras, and a single bonsai is reportedly cared for continuously across multiple generations from parent to child to grandchild.

The modern bonsai world is reportedly facing the contrasting situations of aging and overseas popularity. While domestic enthusiasts are on a declining trend, abroad new enthusiasts including younger generations are expanding. Recently, new styles adapted to modern living environments — such as small "mini bonsai" and tabletop bonsai — are generally said to have appeared as well.