Part of the estate was set aside for a recreation area, which became Rosehill Racecourse.
The tree was later marketed by the Willis Nursery Co. of Ottawa, Kansas.
The name Rosehill was given to Rosehill Racecourse, and subsequently the associated station and the neighbouring suburb of Rosehill, an area to the east of Parramatta.
Early European settlers encountered the Eastern Rosella at Rose Hill, New South Wales, now Parramatta, and so they called it the Rosehill Parakeet, which became, "Rosehiller", and eventually "Rosella".
In 2001, Waterhouse’s father, Robbie Waterhouse, asked him if he would help out at Rosehill racecourse, which Waterhouse enjoyed.