Pseudowintera colorata (Raoul) Dandy

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Credits

Roderick Cameron (2025)

Recommended citation
Cameron, R. (2025), 'Pseudowintera colorata' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/pseudowintera/pseudowintera-colorata/). Accessed 2025-04-21.

Family

  • Winteraceae

Genus

Common Names

  • Horopito
  • Red Horopito
  • Mountain Horopito
  • Alpine Pepper Tree
  • Pepperwood

Synonyms

  • Drimys colorata Raoul
  • Drimys axillaris var. colorata (Raoul) Kirk
  • Pseudowintera axillaris var. colorata (Raoul) A.C.Sm.
  • Wintera colorata Tiegh.
  • Wintera monogyna Tiegh.

Glossary

article
(in Casuarinaceae) Portion of branchlet between each whorl of leaves.
flush
Coordinated growth of leaves or flowers. Such new growth is often a different colour to mature foliage.
glaucous
Grey-blue often from superficial layer of wax (bloom).
variety
(var.) Taxonomic rank (varietas) grouping variants of a species with relatively minor differentiation in a few characters but occurring as recognisable populations. Often loosely used for rare minor variants more usefully ranked as forms.

Credits

Roderick Cameron (2025)

Recommended citation
Cameron, R. (2025), 'Pseudowintera colorata' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/pseudowintera/pseudowintera-colorata/). Accessed 2025-04-21.

Shrub to 3.5 m tall; trunks and branches upright. Bark and branches dark. Plants glabrous. Leaves alternate, 2–6(–8) × 1–3 cm, elliptic, margin undulate, apex obtuse to subacute, leathery, upper surface matt green to yellowish-green, blotched with red when growing in exposed situations, undersides glaucous to white and often pink-flushed, midvein inconspicuous above, raised below; leaf very pungent to taste; petiole slender, 5–10 mm long, dark reddish brown. Flowers small, axillary, c. 1 cm diameter, in clusters of 1–3, on slender pedicels 5–10 mm long, bracts ciliate; calyx cupule margins subentire to shallowly lobed; petals 5-(6), 4–5 mm long, linear to narrow-oblong, greenish-yellow, apex obtuse; carpels 1–5 but only 1–2 maturing, stigma apical; stamens 5–20. Fruit a 2–3-seeded fleshy globose to subglobose berry, 5–6 mm diam., dark red or black, flesh red. Seed 1– or 3-angled, obovate to elliptic, 2.6–3.6 mm, surface irregular. (de Lange 2025; Smith 1943; Allan 1961).

Distribution  New Zealand North, South, and Stewart Islands

Habitat Coastal, lowland, or montane forest margins and shrublands.

USDA Hardiness Zone 9b-10a

RHS Hardiness Rating H3

Conservation status Not evaluated (NE)

As its epithet suggests, what sets this plant apart is the unusual colouring of its aromatic foliage: pale yellow-green above, often with a pink flush, bordered in bordeaux red, sometimes blotched that colour when growing in exposed conditions, and glaucous below. It can easily be mistaken for a cultivar selected for its showiness, but this is its natural appearance. Particularly striking colour selections are available in the horticultural trade (see below). The leaves are strongly peppery, best tasted as a small sample; the same applies to the berries (Grant 2025). According to the Hillier Manual, however, fruits are ‘rarely produced in the British Isles’ (Edwards & Marshall 2019), but this may be because usually only male or female plants are grown.

It is usually a rounded shrub to 1.5–1.8 m, but occasionally achieves a greater, tree-like stature, though only two records of it at tree height exist in The Tree Register of Britain and Ireland (2025), both in Ireland, and so at the milder limits of our area. There it seems to grow taller than in the wild, reaching 7 m at Ilnacullin on Garinish Island in County Cork. In Australia it is difficult to grow due to its moisture requirements. It seems to do well, however, in gardens in its native New Zealand (Grant 2025), where it is also used in street plantings as edging or in low hedges (Blue Mountain Nurseries 2025). It is slow-growing in cultivation but very hardy, thriving in good soil enriched with humus and succeeding reasonably well in a variety of soils. It can grow in either sun or shade, but produces its best colour in full sun (Metcalf 2000). Like the other species in the genus, it has several medicinal properties (see genus article), and it has been planted as a commercial crop in New Zealand for that purpose (Forest Herbs Research 2025).

In the wild, it is often one of the principal constituents of second-growth scrub following forest clearance, and it is one of the few plants that deer and other browsers leave untouched. Some wild bushes have leaves that are golden without the reddish colouring, but plants propagated from such forms and grown alongside the typically coloured forms soon developed the burgundy markings (Metcalf 2000). Cooney et al. (2012) showed that the red leaf margins of this species indicate increased content of polygodial, the chemical that provides medicinal benefits and serves as an effective antifeedant, deterring insects that feed on the leaves. It is likely that the wine-coloured markings, so ornamental for gardeners, function as visual signals to reduce herbivory. Māori women, when weaning a child, rubbed crushed leaves of this species on their breasts to give them a bitter taste, and the sap was used to treat skin ailments (Metcalf 2000).

First described by Raoul in 1844 (as Drimys colorata), for several authors, including the Winteraceae guru A.C. Smth, it is not sufficiently different, especially in terms of floral characteristics, from Pseudowintera axillaris, and is better placed as a variety of it (Smith 1943). Prevailing wisdom considers that leaf characters and differences in distribution are sufficient reasons to maintain its species status, a view shared by Dandy when he renamed the genus in 1933 and by Vink (1970).


'Marjorie Congreve'

A form with young growths of rich coppery red, described in the Hillier Manual as ‘most attractive’ (Edwards & Marshall 2019). Selected by Ambrose Congreve at the renowned Mount Congreve near Waterford, Ireland, and named for his wife.


'Moulin Rouge'

A cultivar of apparently unknown origin, in which the characteristics of the species are intensified. New leaves emerge a deep purple colour with red-purple splotches and age to become dark purple-red with a green-yellow centre (The Plant Company 2025).


'Red Leopard'

A clone that features deeper and more consistent colouring than the typical species. Selected before 1996 by Denis Hughes at Blue Mountain Nurseries in Tapanui, New Zealand (Blue Mountain Nurseries 2025). Commercially available in New Zealand and the UK (Leafland 2025, Burncoose Nurseries 2025).


'Ruby Glow'

This is a smaller-leaved clone. The mature leaves are yellowish or greenish-yellow, providing a good contrast for the young foliage, which is heavily flushed with rosy-red or crimson. It was selected from a wild plant growing in the north Taranaki area, North Island, by Felix Jury of Tikorangi, Waitara (Metcalf 2000). It appears to be commercially available only in New Zealand.