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Amyema congener

variable mistletoe

Loranthaceae Eastern Australia

Attracts Pollinators Attracts Butterflies Drought Tolerant

SunFull Sun – Part Shade

WaterLow · drought-tolerant

HardinessZones 9–11

Overview

Amyema congener is an evergreen aerial hemiparasite that grows on the branches of host trees, forming a pendulous to rounded clump 1-3 feet (30-90 cm) across. It taps the host water and minerals through a haustorium while making its own sugars through photosynthesis. The leaves are variable in shape, from narrow to broad and oval, 1-3 inches (2.5-8 cm) long, dull green to grey-green and often opposite. Red to orange tubular flowers are borne in groups of three on a common stalk, each flower 0.6-1.2 inches (15-30 mm) long, opening mainly in summer and autumn. The fleshy berries about 0.3 inch (8 mm) long are eaten by mistletoebirds, which spread the sticky seeds to new host branches. Hosts include Eucalyptus spp. and several other tree genera. Leaf shape varies between plants and with the host, which gives the species its common name. Heavy infestations can weaken or kill host branches, and the plant cannot grow apart from a living host.

Native Range

Native to eastern Australia, occurring through Queensland, New South Wales, and Victoria. Grows in forest and woodland wherever suitable host trees are present, from the coast to inland ranges.

Suggested Uses

Functions as a food and shelter plant in native woodland, a source of nectar and fruit for birds and a larval host for some butterflies. Not grown as a garden ornamental because it requires a living host. Retained in remnant vegetation and revegetation areas for wildlife value.

How to Identify

Recognised by its variable leaves, ranging from narrow to broad and oval, 1-3 inches (2.5-8 cm) long and dull grey-green, which separate it from the narrow terete-leaved Amyema preissii. Red to orange tubular flowers occur in stalked groups of three. The plant grows as a hanging clump on host branches rather than from the ground.

Appearance

Size & Dimensions

Height1' - 3'

Width/Spread1' - 3'

Reaches mature size in approximately 3 years

Colors

Flower Colors

red

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~2 weeks

Summer Fall

Flowers mainly in summer and autumn (December to May in the Southern Hemisphere), with timing varying across its range and with the host. Individual flowers last about 2 weeks. Flowering and fruiting follow local rainfall.

Detailed Descriptions

Flower Description

Red to orange

Foliage Description

Dull green to grey-green

Growing Conditions

Sun Requirements

SunFull Sun SunPartial Shade

Requires 5-8 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

Water & Climate

Water Needs

Low

Frost Tolerance

hardy

Time to Maturity

2-4 years from germination to flowering

Drought Tolerance

Drought tolerant when established

Care & Maintenance

Care Guide

Amyema congener grows only as a parasite on a living host and is not cultivated by conventional means. In habitat it needs a compatible host, often a Eucalyptus spp., in full sun to light shade at the point of attachment. Establishment depends on bird-dispersed seed lodging on a suitable branch. Water and minerals come through the host connection, so the plant health follows that of its host. Loss of the host or severe drought kills the mistletoe. No routine maintenance applies.

Pruning

Removal is carried out by cutting the host branch below the point of attachment, as the haustorium is embedded in the host wood. Cutting only the visible growth leaves the haustorium, which resprouts. Heavy mistletoe loads on a single tree are sometimes thinned to reduce stress on the host.

⚠️ Toxicity Warning

Unknown