Growing
- Forest layer: Large shrub.
- Growth habit & lifespan: Fast-growing evergreen, dense and thicket-forming.
- Size: 2-4m.
- Site preference: Full sun to part shade, wide soil tolerance.
- Water needs / drought tolerance: Drought tolerant once established.
- Fruiting / flowering season: Bright yellow flowers, notably heaviest in autumn and winter, which is where the common name comes from. Seed pods follow.
- Propagation: Seed, prolific.
- Harvesting technique: Not applicable, removal target.
Permaculture Function
- Permaculture functions: Minimal net positive. As a legume it fixes nitrogen, but this is outweighed by its thicket-forming habit shading out native understorey diversity.
- Wildlife value: Some pollinator visitation at flowering, offset by habitat displacement where it forms dense stands.
- Edibility / medicinal use: Not edible. exact toxicity profile of seeds/pods.
- Companion notes: Not applicable, removal target.
Safety & Control
- Toxicity: Seeds and pods carry some toxicity risk if ingested in quantity, worth treating with caution around children, pets and livestock. exact toxic compound and threshold.
- Control method: Never herbicide as the plan. Hand-pull seedlings, cut and stump-treat established shrubs, and bag seed pods before removal to prevent them adding to the seed bank.