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Berwick Forest branches branchlets brown Canterbury central North Island clones cones Cryptomeria and Thuja Cryptomeriajaponica damage density diameters Douglas-fir drooping durable ﬂrst foliage Forest Research Institute green grown Thuja grows best Hanmer Forest heartwood height growth indigenous forest Japan japonica joinery kiwifruit leading shoot leaves ma/ha mean annual increment mean height mean top height moist moisture content North America North Island older trees Oregon ornamental Picea Pinus plantations planted plicata and Tsuga provenance trial pruning pure stands Pureora radiata pine reddish Research Institute Limited role Rotorua Ruatoria scales Seed Source seedlings seedlots shelter shelterbelts soils South Southland stems/ha tending schedule thin Thuja and Tsuga Thuja occidentalis Thuja plicata Thuja plicata Thuja Thujopsis dolabrata timber trial at Whakarewarewa Tsuga heterophylla Tsuga species underplanted underside volume West Otago western hemlock western redcedar Westland Whakarewarewa Forest whitish yellowish young trees Zealand Forest Research Zealand grown