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Grevillea australis

Alpine Grevillea

Species Description

This link will give you an image of the species as a mature plant, as well as flower, fruit and seed description.

Species description

Cultivation and Uses

This link will give you information about climate parameters, tolerance of climate extremes and adverse soils, biological traits under cultivation, soil factors, uses and potentially undesirable attributes.

Cultivation and uses

Plant Growing Stages

Germination

2 Months

4 Months

6 Months


Seed

Seed Description


Seed Pre-Treatment

Hot Water Treatment

Sowing

Seed Pre-Treatment: Nick seed coat. Hot water soak for 48 hrs
Cover seed to a depth one or two times the diameter of the seed.

Watering
 

Germination
 

Treated seed usually germinates within 3-6 weeks.
Germination without pre-treatment of seed may be erratic over 12-24 months. To enhance germination, the following methods have been suggested (combine for best results):
Smoke treatment, soaking in hot water for 24-48 hours, peeling the waxy coat off (first soak seed in cold water overnight, then place between paper towels for 2 days), nicking of seed coat.
One study found that stratification and smoke treatment of fresh seed worked well, while seeds of this species did not respond to other treatments.
Daytime temperatures above 22°C may inhibit germination.

Pests and Disease
 

Species susceptible to Cinnamon fungus (Phytophthora cinnamomi) dieback

When to Sow Seeds / Temperature to Sow

Autumn or early Spring

Seed Collection Timeframe
 

Storage and Ripening
 

Best used fresh, however if stored at 4°C seed may remain viable for up to 5 years.

Grows from Cuttings
 

Yes