Silk Oak

Grevillea Robusta

Design with this plant

Overview

The Silk Oak, or Grevillea robusta, is an elegant evergreen with fern-like foliage, growing up to 100 feet tall with a spread of 20-30 feet. Its nectar-rich, orange blossoms emerge in spring, attracting pollinators. Native to Australia, it thrives in USDA Zones 9-11, preferring full sun and well-drained soil. This fast-growing tree is drought-tolerant, making it an ideal focal piece for large landscapes requiring minimal maintenance.

Sun FullWater Low, Very LowZones 8–10

Silk Oak (Grevillea Robusta) — is an elegant evergreen with fern-like foliage

Culture

Sun: Full
Water: Low, Very Low
USDA zones: 8–10

Shape & size

Mature height: 50–60 Ft.
Mature width: 30–40 Ft.

Classification

Family: Proteaceae

See full data, regional cultivation notes, full-resolution photos, and design tools. Build a client presentation around this plant.

Start your 14-day trial

Photos (78)

Silk Oak (Grevillea Robusta) — gold and yellow flowers in the garden; is a majestic evergreen tree renowned for its ornamental qualities and, image 73

Silk Oak (Grevillea Robusta) — tree with gold and yellow blooms; provide a stunning contrast against the deep green, image 74

Silk Oak (Grevillea Robusta) — tree for full; regular pruning will help maintain its shape and prevent excessive spread, image 75

Silk Oak (Grevillea Robusta) — is an elegant evergreen with fern-like foliage; native to Australia, it thrives in USDA Zones 9-11, preferring full, image 76

Silk Oak (Grevillea Robusta) — growing up to 100 feet tall with a spread of 20-30 feet; the Silk Oak's fern-like foliage presents a delicate texture, image 77

Silk Oak (Grevillea Robusta) — Its nectar-rich, orange blossoms emerge in spring, attracting pollinators; it requires full sun exposure to thrive, image 78

Related plants

Veldfire Conebush (Leucospermum 'Veldfire') — The Veldfire Conebush (Leucospermum 'Veldfire') adds fiery charm with its vibrant orange-red pincushion blooms

Veldfire Conebush

Leucospermum 'Veldfire'

Full · Zones 9–10

Red Hooks Grevillea (Grevillea 'Red Hooks') — Grevillea 'Red Hooks' is an evergreen shrub

Red Hooks Grevillea

Grevillea 'Red Hooks'

Full · Zones 9–10

Grevillea Canberra Gem (Grevillea 'Canberra Gem') — It reaches up to 10 feet in height and spreads approximately 6-10 feet wide

Grevillea Canberra Gem

Grevillea 'Canberra Gem'

Full · Zones 9–10

King Or Giant Protea (Protea Cynaroides) — also known as Giant Protea

King Or Giant Protea

Protea Cynaroides

Full · Zones 7–9

Silver Tree (Leucadendron Argenteum) — Hardy to USDA zones 10 and 11

Silver Tree

Leucadendron Argenteum

Full · Zones 9–10

Coastal Gem Grevillea (Grevillea Lanigera 'Coastal Gem') — Grevillea lanigera 'Coastal Gem' is a low-growing

Coastal Gem Grevillea

Grevillea Lanigera 'Coastal Gem'

Full · Zones 9–10