The principal, John Mason has been editor of for garden magazines, and is author of over 40 gardening books. He is a fellow of the UK Institute of horticulture and a fellow of Australia's Parks and Leisure Institute.
The college staff includes a dozen qualified and skilled horticultural experts, from across Australia, the UK and New Zealand.

Staff come from varied backgrounds: with both teaching and hands on vocational experience (including ex university, vocational college and training staff; research academics, etc).  Courses cover e learning or traditional studies; flexible education options for career (jobs), self improvement, professional development, life skills or general adult education.

ACS offers over 200 gardening courses, from short courses for the home gardener; to long, fully professional qualifications for the horticulturist.