Warren is a trade qualified horticultural gardener with a background in arboriculture. He spent time working within the botanic gardens and then progressed to become the foreman of The Lady Norwood Rose Gardens where he remained for seven years.
Warren is now a landscape and gardening contractor while also tutoring regularly in various horticultural fields.
Warren has achieved his level four adult training certification.
Wellington Bird Rehabilitation Trust – https://www.wbrt.org.nz/ all courses take place in Ohariu Valley, just outside of Johnsonville, at the Wellington Bird Rehabilitation Trust. The Trust owns and operates the nursery, Feathers and Flora https://feathersandflora.co.nz/ and teaches gardening courses in association with Wellington High School Community Education Centre.