The gardens at Mayday Hills cover 27 acres and were planted in the 19th century. The rich botanical setting was founded on donations of exotic trees and shrubs from the Royal Botanical Gardens in Melbourne. The gardens are set against a backdrop of magnificent native trees, most notably brittle gums. National Trust (Victoria) has recently classified over 200 of Mayday Hills’ trees as significant at a Regional or State level. The tallest tree in the gardens is a 50 metre high Douglas Fir, seen on the White Oak Walk.