Pelargonium australe (Austral Stork's-bill)

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Pelargonium, Genus, australe, Species,

Genus & species

austral Stork's-bill

Geraniaceae

Southeastern Australia and New Zealand

Attracts Pollinators Attracts Butterflies Drought Tolerant Container Friendly

SunFull Sun – Part Shade

WaterLow · drought-tolerant

HardinessZones 9–11

Overview

Pelargonium australe is a soft, sprawling perennial herb native to southeastern Australia and New Zealand. It grows 8-24 inches (20-60 cm) tall and forms a low mound or spreading clump 12-24 inches (30-60 cm) wide. The rounded to shallowly lobed leaves are grey-green, softly hairy, and have crinkled, slightly toothed margins, carried on long stalks that rise from a woody base. From spring into summer it produces small clusters of five-petalled flowers held above the foliage on slender stems. The flowers are pale pink to white, with the upper two petals marked by darker pink to purple veins. After flowering, the developing seed forms a long, beak-like structure, the source of the stork's-bill name. The plant grows naturally on coastal cliffs, rocky headlands, grasslands, and into subalpine sites, which gives it a broad tolerance of exposure and poor soils. It withstands salt spray, wind, and dry periods once established, but it is short-lived and can become straggly without occasional trimming. In cold-winter regions it is cut back or killed by hard frost and is often grown as a container plant moved under cover.

Native Range

Native to southeastern Australia, including coastal and inland sites across Victoria, New South Wales, Tasmania, South Australia, and Western Australia, and also native to New Zealand. It grows on coastal cliffs, rocky outcrops, grasslands, and subalpine slopes.

Suggested Uses

Pelargonium australe is used in coastal gardens, rockeries, dry borders, and containers, where its tolerance of wind, salt, and drought suits exposed positions. It works as a low groundcover on banks and is grown as a frost-tender perennial or as an annual in colder regions.

How to Identify

Recognised by its rounded, grey-green, crinkled leaves on long stalks and its loose clusters of pale pink to white flowers with darker veins on the upper petals. The leaves are softly hairy and faintly aromatic when crushed. The long, pointed seed capsule that splits into coiling segments separates Pelargonium from true Geranium, which has shorter beaks.

Appearance

Size & Dimensions

Height8" - 2'

Width/Spread1' - 2'

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~8 weeks

Flowers: October–January

Spring Summer

Flowering is heaviest from spring into early summer, roughly October to January in its native range, and scattered flowers can appear at other times in mild conditions. Each flower lasts a few days, with clusters opening in succession over several weeks. Cutting spent stems extends the display into the warmer months.

Detailed Descriptions

Flower Description

Pale pink to white with darker pink veins

Foliage Description

Grey-green

Growing Conditions

Sun Requirements

SunFull Sun SunPartial Shade

Requires 6-10 hours of direct sunlight daily

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range5.5 - 7.5 (Acidic to alkaline)

3579

Soil Types

sand loam rocky

Drainagewell drained

Water & Climate

Water Needs

Low

Frost Tolerance

hardy

Drought Tolerance

Drought tolerant when established

Care & Maintenance

Care Guide

Pelargonium australe grows in full sun to light shade in free-draining soil and tolerates sandy, rocky, and coastal sites. Once established it needs little water and copes with drought, salt wind, and poor fertility. Overwatering and heavy, wet soils are the main causes of root and stem rot. A light trim after the main flush keeps the plant compact and slows its tendency to sprawl. In frost-prone areas it is grown in pots and sheltered over winter, as hard frost cuts back or kills exposed plants. It self-seeds in open ground and is easily raised from cuttings.

Pruning

Straggly stems can be cut back by up to one-third after the main flowering flush to keep a compact shape. Old, woody growth can be removed at the base to make way for fresh shoots. Light trimming through the season keeps the mound dense.