A 200 year old Wisteria tree in Japan

The Japanese have a style of bonsai called “Habu Inu” that basically trains the vine as a bonsai for its first 10 years of life to establish a strong root ball. The vine is then transplanted, as a mature but miniature tree, into a series of larger clay containers every year. For a Wisteria, this means 40 years of consecutive and increasing container changes ranging from 1 pint to 250 gallons in size. Finally, the Wisteria is now fully trained as a tree and is transplanted into the ground.