At the end of the 19th century, the flower and tree grower James Clark imported jacaranda seedlings from Australia and began growing them on a large scale. In November 1906, he donated two hundred small saplings to the Pretoria City Council, which planted them on Koch Street (today Bosman Street). The city engineer Walton Jameson, soon known as "Jacaranda Jim", launched a program to plant jacaranda trees throughout Pretoria, and by 1971 there would already be 55,000 of them in the city.