shrub

Fern-leaf Grevillea

The Story

Plant Bio

Grevillea pteridifolia is an evergreen, sparsely branched large shrub or small tree native to northern Australia, characterized by deeply divided, silvery-green leaves with silky-hairy undersides. The bright orange-yellow flowers are produced in dense, one-sided, brush-like racemes up to nine inches long during the cooler months.

This species is distinguished by its highly dissected, fern-like foliage and its unusual tolerance for seasonally damp soils, which is uncommon among members of the Proteaceae family. The foliage and bark contain resorcinols that can cause contact dermatitis, requiring handling with gloves.

Uses & Benefits:

Features striking, deeply cut silvery-green foliage and bright orange brush-like flowers that bloom through winter.

Functions as an effective windbreak or screen in warm, coastal, or arid landscapes.

Provides a rich nectar source for hummingbirds and other nectar-feeding birds during the cooler months.

Essentials

At a Glance

Plant Type

Shrub

Height

551"

Width

197"

Light

Full Sun

Zones

Water

Low

Humidity

High

Lifespan

Moderate

Native To

Northern Australia

Toxicity

Skin Irritant

Bloom period

Winter – Spring

In flower about 6 months of the year

Planting

How to Grow

Plant in a full-sun location with highly permeable, acidic to neutral sandy soil or sandstone-derived loam.
Water regularly during the first growing season to establish a deep root system, then reduce frequency to rely on natural rainfall.
Apply only low-phosphorus, native-formulated fertilizers sparingly in spring, as standard fertilizers will cause phosphorus toxicity.
Protect the plant from freezing temperatures, as hard frosts will cause severe foliage and stem damage.

Pro Tip

Prune lightly immediately after the spring flowering flush to maintain a compact shape; cutting back into old, leafless wood prevents new buds from breaking and will kill the branch.

Keep It Thriving

Care Guide

Do

Use gloves when handling or pruning the plant to avoid skin irritation from resorcinols.
Prune lightly after the main flowering period to encourage branching and prevent a straggly habit.
Grow in a container that can be moved indoors if gardening outside USDA Zones 10 and 11.

Don't

Do not apply standard phosphorus-rich fertilizers, which damage the specialized proteoid roots.
Do not cut back into old, bare wood lacking active green leaves, as the stems will fail to reshoot.
Do not allow the soil to remain waterlogged, especially in cold winter temperatures.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Pest Check
Prune
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Specimen PlantScreeningWindbreakCoastal GardenBird Garden

Companion Plants

Anigozanthos flavidus Banksia integrifolia Callistemon viminalis

Multiply

Propagation Methods

Good to Know

Common Questions

Fern-leaf Grevillea questions

What zones can Fern-leaf Grevillea grow in?

Fern-leaf Grevillea is hardy in USDA Zone 10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Fern-leaf Grevillea deer resistant?

Not reliably. Deer may browse Fern-leaf Grevillea, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Fern-leaf Grevillea bloom?

Fern-leaf Grevillea typically blooms in winter through spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Fern-leaf Grevillea need full sun?

Fern-leaf Grevillea does best in full sun (6+ hours).

Is Fern-leaf Grevillea drought tolerant?

Yes — once established (usually after the first full season), Fern-leaf Grevillea handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.