Karen commenced her horticultural career as an Apprentice at the Adelaide Botanic Garden in 1987. Throughout her career she has held multiple roles across the horticultural industry including Roma Street Park Lands, Brisbane and the University of Adelaide, Waite Arboretum. While studying a Bachelor of Science, Karen specialised in plant physiology, specifically plants growing in saline environments.
Karen has held the role of Horticultural Curator at the Adelaide Botanic Gardens since 2006 where she oversees two of the largest significant tree collections.