Springbrook has a rich biodiversity that is among the highest diversity of flora, fauna and fungi in Subtropical Australia. Habitat types include Montane Sclerophyll Forests dominated by temperate eucalyptus trees such as New England Blackbutt (Eucalyptus campanulata) and Blue Mountain Ash (Eucalyptus oreades) both of which are near their Northern limit of distribution. Rocky outcrops and cliffs support Montane Heath shrublands dominated by Tea Trees Leptospermum variable and L. petersonii, Mountain Bottlebrush Melaleuca montana and Cliff Bottlebrush M. comboynensis. The GIant Rosette Plant Doryanthes palmeri is present on cliffs. Many threatened and endemic flora species are present notably the Endangered Springbrook Leatherwood Eucryphia jinksii which is found nowhere else.