Project Crimson works with mainland pohutukawa (Metrosideros excelsa) the large prolific coastal tree we all love. As the Trust does not advocate planting pohutukawa outside of its natural growing area (north of a line drawn from Gisborne to New Plymouth), it is therefore impossible for us to recommend taking the species to another country. A very good example to support this is the south-western tip of South Africa where pohutukawa has been listed as a serious alien invader due to stands of impenetrable pohutukawa growing there.