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Grevillea robusta · Proteaceae

Silk Oak

⚠️ Not safe for petsEvergreen, maintaining foliage throughout the year.150 to 300 cm
Full sunModerate, allow to dry between wateringsMediumDoes not tolerate temperatures below 5 degrees Celsius.

Description & origin

The silk oak is a fast-growing tree with fern-like green leaves. It is ideal for spacious gardens and provides ample shade.

Size

Can reach up to 3 meters in domestic cultivation.

Foliage

Evergreen foliage that remains green throughout the year.

Flowering

This species does not produce flowers in domestic cultivation.

Detailed care

Light

Prefers full sun for healthy growth.

Soil

Well-drained, slightly acidic soil is ideal.

Watering

Moderate watering, allowing the soil to dry slightly between waterings.

Temperature

Avoid temperatures below 5 degrees Celsius.

Fertilising

Fertilize in spring with a balanced fertilizer.

Repotting

Transplant in spring when young.

Pruning

Prune to maintain shape and remove dead branches.

Propagation

Propagation by seeds or semi-hardwood cuttings.

Common problems

Root rot

Occurs in poorly drained soils, causing wilting and plant death.

Mealybug infestation

Insects that suck sap, weakening the plant.

Cold sensitivity

Leaves may burn at temperatures below 5 degrees Celsius.

Uses & curiosities

In the garden

  • Shade
  • Visual barrier
  • Attracts birds

Other uses

Wood used in carpentry

Did you know…

Although an Australian tree, it adapts well to the Portuguese climate in frost-free areas.