Ormiston house is a very fine example of a colonial garden estate set up for the acclimatisation and testing of commercial crops. Captain Hope was a lover of plants and flowers, and was innovate in his development of the gardens on the Ormiston property. The gardens were developed to a very high standard, Hope having imported many shrubs and plants from overseas; the house was surrounded with roses, azaleas, camellias, magnolias and hibiscus. He imported more than £2,000 worth of azaleas alone, many of which were later stolen. A large fountain once occupied a position in the front of the house and amongst the shrubs and flowers were placed examples of statuary much in favour in that period. Many specimen trees were planted throughout the property, and a broad avenue of palms and one of bunya pines were planted. A magnificent Quadrangulata is situated close to the Southern side of the house, one of only two that exist in Australia.
Hope used a style of irrigation which was thought to be the first of its type in the colony. It consisted of wells, a windmill and perforated pipes.