The forest here features a species of Libocedrus, variously called Pahautea, Kaikawaka or New Zealand cedar, Libocedrus bidwillii, which is unusual in this region of New Zealand.
The larvae feed on a wide range of trees and shrubs, including Dacrydium cupressinum, Prumnopitys taxifolia, Dacrycarpus dacrydioides, Libocedrus bidwillii, Cupressus macrocarpa, Leptospermum scoparium, Kunzea ericoides, Ozothamnus leptophyllus, Abies, Picea, Pinus and Thuja species.