Landscape Architecture Aotearoa Issue 2 Issue 2 | Page 58

58 LANDSCAPE ARCHITECTURE AOTEAROA COPROSMA ACEROSA: A sprawling, at-risk groundcover; ideal for exposed spots. make it a superb choice for rock gardens or pots in frost-free regions. Among the choice of native shrubs, the Brachyglottis genus offers several species adept at thriving on exposed sites. Brachyglottis monroi is a particularly attractive shrub with serrated grey leaves and bright yellow flowers; it is endemic to the Marlborough region, making it a fine choice for drier areas of NZ. Carmichaelia glabrescens is another southeast dweller and is one of the more unusual, yet striking, species on this plant list. It is a small, leafless tree from the broom family which bears masses of spectacular pink flowers – a showy species for a steep, free draining bank, cliff face or rock wall. Plagianthus divaricatus is a bushy shrub with tangled branches and a purple-red silhouette. It is usually found growing along open estuarine edges - it is a hardy yet elegant shrub for an exposed garden. Olearia angulata is one of many in the Olearia genus that are useful starters on windy sites. Its silver-green foliage, compact form and bright yellow flowers make this small tree a wise choice as a single specimen or hedging plant in northern areas. Establishing a garden on an exposed site can prove a massive challenge for all involved. Fortunately, local plant species can bring an astounding range of form and colour to even the most tempestuous locations. With thorough site analysis, carefully considered plant selection and a healthy dose of patience, tackling a ‘blank canvas’ can be hugely rewarding for both designer and client.  NATIVE PLANTS FOR SHADE HEIGHT(M) WIDTH(M) GROWTH FORM NOTES Acaena anserinifolia 0.15 1 Groundcover Dense, fast-growing mat; erosion/weed control in various climes; reliable. Acaena microphylla 0.1 1 Groundcover Bronze-green foliage; massed red seed heads; needs wind in humid areas. Astelia banksii 1 1.5 Flax-like Northern coastal species; dramatic foliage for south facing, dry bank or similar. Austroderia fulvida 1.5 2 Grass Smallest toetoe; drooping flower spike; adaptable feature plant; Nth Island. Brachyglottis repanda 4 2 Shrub Large grey leaves, white flowers, corky bark; pioneer species; bushmans friend. Brachyglottis monroi 0.6 0.6 Shrub Marlborough native; dislikes humidity; serrated foliage; bright yellow blooms. Carex trifida 0.8 1 Sedge Robust, compact tussocks; coastal swamp or similar garden; bold & reliable. Carmichaelia australis 3 2 Tree Open form; flat stems; ‘leafless’; purple flower clusters; northern cultivation. Carmichaelia glabrescens 10 4 Tree Weeping southern species; masses of pink flowers; drier regions and lime soils. Coprosma acerosa 0.4 1 Groundcover At risk; sprawling, wiry, orange-green mat; needs exposure & free-draining soil. Coprosma petriei 0.1 1 Groundcover Dense mats of fine emerald foliage; needs shelter to start; Japanese gardens. Coprosma propinqua 3 2 Shrub Divaricating, small-leaved; forms low mound on exposed sites; NZ wide. Dodonaea viscosa 4 2 Tree Hardy coastal bush; fresh green foliage; reddish bark; fast growing; needs sun. Euphorbia glauca 0.5 2 Herb At risk; erect, creeping habit; unusual grey/green/blue foliage; free draining soil. Geranium traversii 0.1 0.4 Herb Silver-green perrenial; variable flower; dainty addition for tough conditions. Hoheria populnea 8 3 Tree Graceful form; scented white flowers; short lived tree for windbreak; NZ wide. Juncus krausii 1 1 Rush Dark stems; coastal marshes & geothermal areas; attractive yet underutillised. Knightia excelsa 12 4 Tree Distinctive columnar form; crimson, bottlebrush-like flowers for nectar feeders. Leptospermum scoparium 4 2 Tree/shrub Common tea tree; abubdant white flowers; several forms including groundcover. Libertia peregrinans 0.3 0.5 Iris-like At risk; creeping habit; bright orange, erect swords; accent plant among greens. Muehlenbeckia astonii 1.5 1.5 Shrub Distinctive red, zig-zag stems; deciduous, heart-shaped foliage; native butterflies. Muehlenbeckia axillaris 0.15 1.5 Groundcover Dense mats of fine, green foliage; tumbles over walls/rocks; scented flowers. Olearia angulata 4 2 Tree At risk; bushy habit; silver-mint foliage; brighten up border/shelter plantings. 2 Shrub Hardy coastal bush; fine grey foliage; bright white flowers; needs exposure. Ozothamnus leptophyllus 1.5 Pachystegia insignis 0.5 0.5 Shrub Striking silver foliage; variable form; daisy flower; free draining, exposed areas. Pimelea oreophila 0.15 0.5 Groundcover Subalpine habitat; glaucous foliage; white flowers; underutilised southern gem. Plagianthus divaricatus 2 1.5 Shrub Tight, divaricating bush; reddish silouhette along estuarine edges; garden-worthy. Planchonella costata 12 8 Tree At risk; handsome coastal tree; glossy foliage; red berries; park or street tree. Veronica punicea 0.5 0.4 Shrub At risk; lush foliage; magenta flowers; for free-draining, small, windy gardens. Xeronema callistemon 0.8 1 Sword-leaved At risk; north coast icon; fresh green swords; bright red flowers; rockery or pots.