Aotus spp.

golden pea

Attracts Pollinators Drought Tolerant Container Friendly

HardinessZones 9–11

Overview

Aotus spp. is a genus of small evergreen shrubs in the pea family Fabaceae, endemic to Australia and comprising about 15 species. Plants are wiry and much-branched, growing 1-6.5 feet (0.3-2 m) tall, with slender stems clothed in small, narrow leaves 0.2-1 inch (5-25 mm) long that often have margins rolled under toward the midrib. The pea-shaped flowers appear in spring along the upper stems, measuring about 0.4 inch (10 mm) across, with yellow to orange petals marked with red or brownish centers, a coloring shared with several unrelated Australian legumes grouped together as eggs-and-bacon plants. Flowers are followed by small, hairy, two-seeded pods. The genus occurs in heathland, dry sclerophyll forest, and coastal scrub, often on nutrient-poor sandy soils, and like many Australian legumes its roots fix nitrogen through symbiotic bacteria. Species range in habit from low, spreading subshrubs to erect plants over head height, with A. ericoides among the more widespread, forming open colonies after fire. The seeds carry a hard coat and germinate in flushes following bushfire or soil disturbance. Most species are frost-sensitive and adapted to dry summers and mild, wet winters, and individual plants tend to be relatively short-lived.

Native Range

Endemic to Australia, occurring across temperate and subtropical parts of the continent. Plants grow in heathland, dry open forest, and coastal scrub, typically on sandy or gravelly low-nutrient soils.

Suggested Uses

Aotus spp. is grown in native and water-wise gardens, on banks, and in heath or coastal plantings where its spring flowers add color among other Australian shrubs. The flowers draw native bees and other insects. Lower, spreading species are used as informal groundcover on dry, sunny slopes.

How to Identify

Look for a small, twiggy evergreen shrub with crowded, narrow leaves under 1 inch (25 mm) long whose edges roll under to expose a paler, hairy underside. In spring the upper stems carry yellow-and-red pea flowers about 0.4 inch (10 mm) wide, single or in small clusters at the leaf bases. The short, swollen, hairy pods and the heath-like foliage separate Aotus spp. from larger-leaved pea shrubs such as Pultenaea spp. and Dillwynia spp..

Appearance

Size & Dimensions

Height1' - 6'6"

Width/Spread1' - 5'

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~6 weeks

Spring

Flowering occurs mainly in spring, from August to November in the Southern Hemisphere, with scattered flowers at other times in mild areas. The massed yellow-and-red blooms last several weeks before giving way to small pods. Seed ripens by early summer and is shed as the pods dry and split.

Detailed Descriptions

Flower Description

yellow with red markings

Foliage Description

green to grey-green

Growing Conditions

Sun Requirements

SunFull Sun

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 Range5.0 - 6.5(Acidic)

357912

Soil Types

sand rocky loam

Drainagewell drained

Water & Climate

Water Needs

Low

Frost Tolerance

tender

Time to Maturity

2-3 years

Drought Tolerance

Drought tolerant when established

Care & Maintenance

Care Guide

Plants need full sun and sharply drained, sandy or gravelly soil low in phosphorus, reflecting their heathland origins. Soil pH from 5.0 to 6.5 suits the genus, and most species decline in rich, fertilized, or waterlogged ground. They tolerate dry summers once established and are damaged by hard frost, suiting USDA zones 9 to 11 or frost-free Mediterranean climates. Propagation is from scarified or smoke-treated seed, which germinates erratically, or from semi-hardwood cuttings. Light watering during dry spells maintains the foliage, while overwatering and high humidity promote root rot. Plants are relatively short-lived and are often replaced every few years or regenerated from seed.

Pruning

A light trim after flowering keeps plants bushy and removes spent blooms before seed sets. Cutting back into old, leafless wood is avoided, as many species do not reshoot from bare stems. Tip-pinching young plants encourages a denser, more compact habit.