New Zealand Christmas Tree flowers
Stable

New Zealand Christmas Tree

Metrosideros excelsus
Metrosideros excelsus
  • DIVISION: Tracheophyta (vascular plants)
  • CLASS: Magnoliopsida (dicotyledons)
  • ORDER: Myrtales
  • FAMILY: Myrtaceae 
  • GENUS: Metrosideros
  • SPECIES: excelsus

 

OVERVIEW

Cheerful masses of bright red flowers burst forth on this tree's branches in early summer. In their native New Zealand, that's around Christmastime. The trees grow in coastal forests of the northern half of New Zealand's North Island, where they thrive in the face of salt spray and strong winds. In some older trees, aerial roots hang from large branches, making the most of coastal fog and humidity. You may encounter a New Zealand Christmas tree closer to home, though; they've been introduced to other warm-climate regions of the world. Up here on the northern half of the globe, they flower in June.

CHARACTERISTICS

An evergreen, this trees grows oblong leaves that are glossy, dark green on top and grayish, with a fine fuzz, on the bottom. The species may grow as a multi-trunked spreading tree or a single-trunked tree with branches close to the ground. Scarlet, bottlebrush-like flowers have both male and female parts. Clusters of pollen-bearing, male parts—called stamens—are the colorful, red parts of the flower. Fertilized flowers produce fruits: velvety gray, half-inch capsules that hold tiny seeds.

CONSERVATION

These trees once grew in a continuous band along the coastline, but European settlement, agriculture, logging, and introduced pests have destroyed about 90 percent of the trees on New Zealand. The silver-gray brush-tail possum Trichosurus vulpecula, an invasive species from Australia, eats its leaves, eventually killing the tree. Nonetheless, these trees have become invasive in certain places, including Japan, Spain, England, and Ireland. In South Africa, they threaten the biodiversity of the distinctive fynbos shrubland.

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PÓHUTUKAWA

The Maori people of New Zealand named this species long before Europeans arrived and began calling it a Christmas tree. They called it póhutukawa, which means "drenched with spray." The Maori used the tree's timber for boat hulls, paddles, weapons, digging sticks, and spades.

DECORATIONS

British settlers in New Zealand are responsible for this tree's common name. Lacking holly, they used flowers of the póhutukawa to decorate their homes for Christmas.

TE WAHA O REREKOHU

The biggest póhutukawa in the world is called Te Waha o Rerekohu, named for the revered Maori ancestor Rerekohu. It is on the coast in Te Araroa, New Zealand, standing 65 feet (19.8 meters) tall and spreading its twisting branches and aerial roots over 125 (38 meters) feet.

CULTIVATION

New Zealand Christmas trees have been introduced to other countries with mild to warm climates. They are drought tolerant, and they are favorites for seaside planting. In some places they grow too well, and have become invasive.

OUR COLLECTION

Look for New Zealand Christmas trees in the Zoo's Australian Outback, near the Australian bird aviaries and the Tasmanian devils.

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