Pseudopanax colensoi, commonly known as the mountain fivefinger in English and orihou in Māori, is an endemic species to New Zealand.

It is a shrub that can often grow into a small canopy tree, and is found in high altitude environments in its preferred areas around New Zealand.

Pseudopanax colensoi is a shrub that can often grow into a small canopy tree that has big glossy yellowish green leaves with purplish stalks.

[4] With large spreading branches and compound petiole leaves, Pseudopanax colensoi can grow up to around 8 meters tall.

colensoi is found in mountainous areas between 300 and 800 meters above sea level and low alpine forests and scrubland,[6] while other varieties like ternatus can grown at higher elevations.

[10] Adding materials such as bark, peat, sawdust, perlite, pumice, vermiculite, sand, and grit to the soil can provide nutrients and improve the chances of survival in a Pseudopanax colensoi plant.

Pseudopanax colensoi is a fast-growing native plant that attracts a wide range of different birds which eat its fruit during October and March.

Some examples of different fungi that affect Pseudopanax colensoi are phytophthora, pythium, grey mould, root rot and rhizoctonia.

[10] Pseudopanax colensoi seedlings and mature trees are highly vulnerable to the damaging effects of various types of fungi.

In this case, the only option is to remove the entire plant to prevent the fungi from spreading and causing further harm to other species around it.

[10] Possums, aphids, mice, slugs, snails, woodlice, caterpillars, and grubs are some pests that can cause harm to Pseudopanax colensoi.

[10] Possums pose a significant threat to native plants due to their destructive nature and potential to spread diseases.

Deer strip all the bark off Pseudopanax colensoi, affecting its strength and causing it to become brittle and break.

[12] Pseudopanax colensoi lives in areas that vary depending on rainfall, sunlight, oceanic climate, wind, and snow.