Spread around a few blocks along Sai Yee Street, Flower Market Road, and Prince Edward Road West, the flower market occupies ground-level shops along a number of residential buildings.
The original flower market was located along Boundary Street during the 19th century, where the New Territories met Kowloon. As a divider between the rural and urban areas, a market grew where products such as vegetables and flowers from the countryside were sold to city residents.
In 1983, the market moved into Fa Hui Park with florists selling flowers on the ground. Intense competition drove traders to run their business earlier than the agreed time, while traffic and parking caused discontent among residents. These merchants were chased down like illegal hawkers, so they started taking up shops along Flower Market Road.
For additional information, consult this thesis from the University of Hong Kong.