Species

1 other cultivar

‘Ivanhoe’Toothbrush Grevillea

shrub

Winpara Gem Grevillea

Grevillea hybrid 'Winpara Gem'

The Story

Plant Bio

Grevillea is a diverse genus of evergreen Australian shrubs and trees characterized by petal-less flowers where the primary display comes from long, colorful styles. These plants are highly adapted to nutrient-poor soils and rely on specialized cluster roots to absorb phosphorus.

'Winpara Gem' is a fast-growing, upright hybrid cultivar that features deeply divided, silvery gray-green foliage with coppery-brown hairs on new growth. It produces compact, spidery clusters of deep coral-red to scarlet flowers from fall through spring.

Uses & Benefits:

Silvery, deeply divided foliage and unique coral-red flowers provide year-round visual interest.

Serves as an effective, fast-growing windbreak, informal hedge, or erosion control barrier on sloped sites.

Provides a valuable nectar source for hummingbirds and beneficial insects during the cooler months.

Essentials

At a Glance

Plant Type

Shrub

Height

94"

Width

118"

Light

Full Sun, Partial Sun

Zones

9, 10

Water

Low

Humidity

Moderate

Lifespan

15-20 years

Native To

Australia

Toxicity

Skin Irritant

Bloom period

Fall – Spring

In flower about 9 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with highly permeable, well-draining soil.
Dig a hole twice as wide as the root ball but no deeper, keeping the crown level with the surrounding soil.
Backfill with native soil without adding organic compost or standard high-phosphorus fertilizers.
Water deeply to settle the soil, then apply a coarse mulch around the base while keeping it clear of the stem.

Pro Tip

Prune lightly immediately after the main spring flowering flush; cutting back into old, leafless wood prevents the plant from reshooting.

Keep It Thriving

Care Guide

Do

Use exclusively low-phosphorus, native-formulated fertilizers.
Ensure the soil drains rapidly to prevent root rot.
Tip-prune regularly from a young age to encourage a dense, bushy habit.

Don't

Do not prune hard into old, leafless wood as it will not regenerate.
Do not apply standard garden fertilizers containing high phosphorus levels.
Do not overwater once the plant is established.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

HedgesWindbreaksCoastal GardensSpecimen Plant

Companion Plants

Salvia apiana Ceanothus Arctostaphylos

Multiply

Propagation Methods

Good to Know

Common Questions

Winpara Gem Grevillea questions

What zones can Winpara Gem Grevillea grow in?

Winpara Gem Grevillea is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Winpara Gem Grevillea deer resistant?

Yes — Winpara Gem Grevillea is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Winpara Gem Grevillea bloom?

Winpara Gem Grevillea typically blooms in fall through spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Winpara Gem Grevillea need full sun?

Winpara Gem Grevillea does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Winpara Gem Grevillea drought tolerant?

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