Cyathea cooperi - Australian tree fern


Cyathea cooperi - Australian tree fern

Small tree 10-20 ftSemi-shadeShadeFull sunKeep soil moistOrnamental foliageSubtropical or temperate zone plant. Mature plant cold hardy at least to 30s F for a short time

Australian Tree fern - one of the most tropical looking plants. Adds "Hawaii" spirit to your garden. It puts on growth very quickly. The fronds typically will reach about 8' long on a mature specimen, but, as with most tree ferns, they will be significantly stunted if kept in a pot. It will grow well in dappled (but not deep) shade, but also does well in some sun, even in hot climates, as long as the moisture supply is adequate. It also does relatively well in exposed, windy situations.
Read more:
Australian Tree Fern - a botanical marvel

Recommended Fertilizer: SUNSHINE Robusta - Rapid Growth Booster
Grown in
10"/3 gal pot
7 plants in stock
$59.95

Plant form ?
Tree
Mature height ?
10-20 ft tall
Sun exposure
Full sun or bright light indoor, Semi-shade, Shade
USDA zone ?
Zone 9-11.
Hardiness ?
Light freezing, 30°F for short period of time, mature plants. Young plants must be protected.
Watering
Keep soil moist
Growing conditions
Outdoors in the suitable USDA zone, Small backyard, Pot-growing, Indoors
Foliage color
Ornamental foliage
More information
Learn more in Top Tropicals Blog

This item is certified for shipping to California, Texas, Louisiana.

Cyathea cooperi - Australian tree fern: Planting and Care Instructions

Plant Overview

Growth habit: This plant grows into a small to medium tree, about 10 to 20 feet tall when planted in the ground. It works well in gardens or yards with room to spread, but it can also be pruned to stay smaller and may be grown in a large pot with proper care.

Growing conditions: This plant can be grown outdoors in the suitable USDA zone. It is well-suited for small backyards, pots, or indoor spaces with enough light.

Watering: This plant likes consistently moist soil. Do not let it dry out completely, and check the soil often.

USDA Zone: Zone 9-11. The USDA Plant Hardiness Zone Map categorizes North America into zones based on average annual minimum winter temperatures, each differing by 10 °F. This map serves as a basic guide for selecting appropriate plants for a region. However, it's not definitive; plant varieties vary in cold tolerance, and young plants typically need more protection. Additionally, local microclimates, like sheltered areas or sunny spots, can influence plant health and survivability beyond the general zone recommendation.

Hardiness: Light freezing, 30°F for short period of time, mature plants. Young plants must be protected. Plant hardiness indicates the coldest temperature a mature plant can endure briefly while staying healthy. This rating is a guideline and can vary among varieties of the same species. Young plants often need more cold protection. Additionally, a plant's survival can be enhanced by the microclimate of its location, which may provide shelter from wind or extra warmth, allowing it to thrive beyond its typical hardiness range.

Foliage: This plant is grown for its ornamental foliage, which adds texture or color to the landscape even when not in bloom.

Outdoor planting

Plant in well-draining soil and choose a location that matches the plant light and space needs. Improve poor soils by mixing in compost or organic matter. Dig a hole twice as wide and no deeper than the root ball - planting too deep can harm the plant. For better drainage, position the plant so the top of the root ball is slightly above ground level. Water thoroughly after planting. Outdoor plants may need temporary shade during the first weeks to protect them from strong sun or heat. Watch the soil moisture closely and water regularly until the plant is well established. Apply mulch around the base to help retain moisture and reduce weeds, forming a shallow basin to hold water. Keep mulch a few inches away from the trunk or stem to prevent rot.

Indoor planting

Use a container with drainage holes and a well-draining potting mix. Position the plant so that the top of the root ball is level with the surface of the soil - avoid planting too deep. A slow-release fertilizer can be mixed into the soil at planting time to support healthy growth. Place the plant in a location that matches its light needs, and water according to its care requirements. Be careful not to overwater, and ensure good airflow around the plant to reduce the risk of pests and disease.

Protecting Plants in Winter

When it gets cold, some plants need extra help. You can move potted plants indoors or under a covered patio. Young plants need extra protection because they are more sensitive to cold and less established. For plants in the ground, use frost cloth to keep them warm. Stop using fertilizer in late fall so plants can rest. Try to place plants in areas protected from cold wind, rain, and frost.

Cold Hardiness and Microclimates

USDA zone and hardiness are only general guidelines. Actual cold tolerance can vary based on plant variety and local conditions. Even small differences between varieties can matter. Also, warmer spots in your yard—like near a wall or fence—can help plants survive cold nights. These little warm areas are called microclimates, and they make a big difference.

Outdoor and indoor planting instructions