In pictures: Japan's homeless

"We started growing vegetables about a year a go," said Mr Sato.

Someone gave the association some land and every Sunday morning the men cycle for one hour to tend it.

"The land had been used for growing pomegranates and it took us months to clear the roots by hand."

The first crops have just been harvested. "We will sell the vegetables in the park. I think we'll make about 10000 yen ($90)," said Mr Sato.