Acacia williamsonii
Acacia williamsonii
- Native to:
- Australia
Wikimedia: MargaretRDonald






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Fabaceae
- Genus:
- Acacia
- Species:
- Acacia williamsonii
Growth Characteristics
- Growth Habit:
- Shrub
- Height:
- 300 cm
- Drought Tolerance:
- High
- Bloom Months:
- jul,aug,sep,oct
- Bloom Colors:
- yellow
- Landscaping Shrub:
- Yes
Keystone Species Ranking
- Caterpillar Keystone:
- ★★★☆☆ Butterfly & moth species supported by this genus (NWF)
Garden & Ecology Notes
- Wildlife Value:
- bees, birds
- Deer Resistant:
- Yes
- Fragrant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Typical of Australian acacias, resprouts from lignotuber or rootstock following fire. Seeds may also germinate prolifically post-fire due to heat scarification.
Propagation & Germination
- Stratification:
- None required
- Scarification:
- Seed coat scarification required before sowing
- Germination Time:
- 14–42 days
- Notes:
- Seeds require scarification (boiling water treatment) to break hard seed coat dormancy. Germinates readily after treatment.
The above propagation data sourced from Claude AI
ORGHPS Germination Guide: Sow @ 20°C. Seed germinates within 3 months Requires scarification. Nick or rub between sheets of sandpaper. Requires soaking. Place in warm water until seeds swell, usually 24-48 hours. Discard water and any seeds that remain floating. * immerse in boiling water for 1 minute, then soak x 2 days in cool water