The Karetu (Hierochloe redolens), which is not a shrub exactly, but a grass, renowned for its delicious scent.
The Kihi-kihi (Pittosporum crassifolium), a shrub with purple flowers, akin to the mapauriki.
The Kohia (Passiflora tetandra), the seeds of which yield a bland oil, that may probably be some day utilized.
The Korokio (Corokia Buddleoides), a fine erect tree, bearing a conspicuous red berry.
The Koromiko (Veronica, sp.), these pretty species are astringent, and their shoots are a remedy for scouring in cattle.
The Kotukutuku (Fuchsia excorticata), when full-grown, it becomes one of the largest trees.
The Kowhaingutukaka (Clianthus puniceus), bears especially fine red and orange blossoms.
The Kumerahu (Pomaderris elliptica), is sweet-scented.
The Mairehau (Phebalium nudum), grows well.