Aciphylla is a most unusual genus of plants, native to New Zealand with one exception. It belongs in the Apiaceae and is thus related to carrot, parsley, dill, celery etc. In appearance however, Aciphylla has little in common with these vegetables but rather has thick, very hard, spiky foliage in rosettes much more reminiscent of certain Agave or Yucca. A. dieffenbachii is a beautiful, medium-sized species that forms clusters of glaucous, finely pinnate, flaccid leaves. Next to A. traversii, it is one of only two species of Aciphylla endemic to the Chatham Islands, where it grows on steep slopes and basalt cliffs along the coast. In cultivation it will do best in a cool temperate, oceanic climate, where it requires a sunny or only lightly shaded spot. It does not like high summer temperatures and is a perfect replacement for Agave and Yucca in such climates. A. dieffenbachii is easy to germinate but may benefit from cold stratification for a few weeks after sowing.