Hakea sericea (silky hakea) is a 2–5m tall, erect, evergreen shrub native to southeastern Australia, recognized by its sharp, needle-like leaves and white-to-cream flowers. It is highly invasive in South Africa, New Zealand, and parts of Europe, forming dense thickets that release thousands of seeds after fires. 
Key Details
Appearance: A rigid, bushy shrub or small tree with dark green, needle-shaped leaves (35–70 mm long) and pungent (extremely sharp) tips.
Flowers: Small white or cream-colored flowers bloom in clusters within the leaf axils, typically between June and September.
Fruit: Distinctive large, woody, woody, dark brown"beaked" capsules (20-30 mm long) that split to release two black, winged seeds.
Invasiveness: Introduced to South Africa around 1858 as a hedge plant, it became a major invasive weed, covering over 350,000 ha by 1983. It is classified as a Category 1b invasive species in South Africa.
Ecology: A fire-adapted species (serotinous) that releases seeds upon the death of the plant (usually via fire).
Control: Managed using biological control agents, including a weevil (Erytenna consputa) that attacks immature fruits and a moth (Carposina autologa). 
Habitat and Distribution
Native Range: Coastal and sub-coastal regions of New South Wales, Victoria, and Tasmania.
Habitat: Thrives in dry sclerophyll forest, heathland, and mountain fynbos.
Environmental Impact: Forms dense stands, outcompeting indigenous vegetation, especially after fire.
AI Overview

Click to find out more on Inaturalist