Western Australian shrub with fine needle-like leaves and small bell-shaped flowers, chocolate-brown on the outside and yellow within, carrying one of the most intense fragrances of any Australian native plant.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 9–10 | −6.7 °C to 4.4 °C | Plant tolerates down to this zone |
| RHS hardiness rating | H3 | −5 °C to 1 °C | Plant needs at least this level of cold tolerance |
| Canadian plant hardiness zone | Zone 9 | −1 °C and warmer | Plant tolerates down to this zone |
| Australian (ANBG) zone | Zone 4–5 | 0 °C to 10 °C | Plant tolerates down to this zone |
Growing notes
- Endemic to southwestern Western Australia — winter-rainfall Mediterranean climate
- Intensely fragrant — among the most powerfully fragrant Australian natives, source of boronia absolute for perfumery
- Notoriously short-lived (3–5 years) and demanding — sharp drainage, cool root run, never wet feet; sulks in heavy soils and eastern Australian humid summers
- Plant grafted onto Boronia clavata rootstock for longer life in difficult soils
Categories
Related plants
Cross-check Brown boronia against your zones