Australian Tree Fern (Cyathea cooperi): Fast-Growing Tropical Statement Plant

Overview

The Australian tree fern (Cyathea cooperi), also called giant scaly tree fern, is a fast-growing, single-trunked tree fern native to eastern Australia. Its slender trunk—covered in distinctive scales and leaf scars—can reach 15–30 feet tall, crowned with a spreading canopy of lacy, bright green fronds up to 10–15 feet long. It brings instant prehistoric drama to frost-free gardens, conservatories, and large containers.

Key Features

• Rapid Growth: Several feet per year in ideal conditions.
• Ornamental Trunk: Scaly, patterned surface adds year-round interest.
• Shade Tolerance: Thrives in filtered light; avoids harsh afternoon sun.

Cultivation

Requires consistently moist, well-drained, humus-rich soil and high humidity. Protect from drying winds. Water the crown and trunk regularly. Feed with dilute liquid fertilizer during active growth. Hardy only to about 25°F (-4°C); in cooler zones, grow in a container and overwinter indoors. USDA zones 9–11 outdoors.

Taxonomic Profile

For a fast, dramatic tropical focal point, the Australian tree fern is hard to beat.