In this file photo taken on April 29, 2017 a visitor takes pictures of a bonsai displayed at the 8th World Bonsai Convention in Saitama. A Japanese cultivator of "bonsai" trees issued a poignant appeal on February 12, 2019 to thieves who made off with his priceless potted plants, including a 400-year-old gnarled juniper. Image Credit: AFP

Tokyo: A Japanese cultivator of bonsai trees appealed on Tuesday for the thieves who made off with his expensive potted plants to take good care of them.

Seiji Iimura, a fifth-generation bonsai cultivator who runs a garden in Kawaguchi, north of Tokyo, told AFP the seven tiny trees stolen from his garden were his “family treasure”.

“It’s something I would never sell even if I got 10 million yen [$90,000, Dh333,293],” he said.

“Of course I hate the thief who stole them, but I want to tell him or her: please pour water on them and please take care of them,” Iimura said. “I would feel sad if they die.”

Iimura reported to police last month that seven bonsai trees, worth more than seven million yen in total — including a 400-year-old gnarled juniper — had been stolen from his garden.

His wife Fuyumi wrote in a recent Facebook entry that the couple had raised the bonsai trees “like our children”.

“I am filled with sadness and heartache,” she wrote.

You know, bonsai is nature in miniature. Looking at a bonsai tree is like walking into a deep mountain while staying at home

- Seiji Iimura

Iimura keeps some 3,000 miniature trees on display at the 5,000 square-metre garden so that visitors can appreciate bonsai art.

Since the theft he has installed security cameras.

“You know, bonsai is nature in miniature. Looking at a bonsai tree is like walking into a deep mountain while staying at home,” Iimura said.

Bonsai is a Asian art form of sculpting small trees.

Bonsai trees often appear as if shaped by wind or the weight of snow. Sculpting them requires a delicate technique of chiselling branches to twist and pull them into shape, all the while battling to keep the tree alive.

Exported Japanese bonsai trees have become a hit overseas.

In 2018, Japan exported about 12 billion yen worth of trees, bonsai and potted flowers, up from 4.5 billion yen about a decade ago, according to data published by the agriculture ministry.