Illustrated Guide to
of New Zealand
Weeds of New Zealand
by Ian Popay, Paul Champion & Trevor James
ISBN 0 473 09760 5
by kind permission of the
Zealand Plant Protection Society
Publication or other use of images or descriptive
text on these pages is unauthorised unless written permission is
obtained from the authors and publisher.
of the publication Common Weeds of New Zealand must always
Available from Touchwood
rhizomatous, semi-tropical perennial herb up to 2 m tall, with magnificent
display of large, conspicuous yellow flowers in late summer, followed
by scarlet seeds in capsules. Major problem of conservation areas
in Auckland and further north.
- Flowers Pale
lemon-yellow with conspicuous red stamens, fragrant, in large
open inflorescence 25-45 cm long. The narrow bracts do not overlap,
and each envelopes two flowers. The corolla tube is about 5 cm
long, with a two-lobed labellum. Flowers Feb-Mar.
- Fruit Three-valved
capsule, 15-18 mm long, orange on the inside, containing numerous
bright scarlet, shining seeds, each 6 x 4 mm.
- Leaves Lance-shaped,
20-45 cm long by 10-15 cm wide, short-stalked, tapering to a point.
- Stems Leafy,
- Roots Large
Road-sides and damp
Common in North Auckland,
very common in and around Auckland City, common in Coromandel
Peninsula, Kawhia, Bay of Plenty, Opotiki, and Gisborne City,
and in Nelson-Buller area in SI. Originally from South Africa.
Listed on the National
Pest Plant Accord (see Introduction for details).
Yellow ginger (Hedychium
flavescens) is somewhat taller, up to 3 m, with off-white
to cream flowers in a cone-like inflorescence, with the bracts
strongly overlapping. Seed is not produced. Common in northern
NI on road-sides, forest margins, stream-sides. This species is
subject to a Pest Plant Management Strategy in Taranaki. Listed
on the National Pest Plant Accord (see Introduction for details).
of botanical name
= sweet snow, meaning the fragrant white flowers of some species;
gardnerianum after Edward Gardner, political resident