Silver Wattle (Acacia dealbata) is a fast-growing, nitrogen-fixing tree native to southeastern Australia. It plays a crucial role in regenerative agriculture by enhancing soil fertility and structure through its symbiotic relationship with nitrogen-fixing bacteria. This tree is an excellent choice for the mid-canopy layer in food forests, providing dappled shade and acting as a windbreak. Its bright yellow, fragrant flowers attract pollinators, including bees, while its dense foliage offers habitat for various wildlife. Silver Wattle is traditionally used by Indigenous Australians for its medicinal bark and as a source of tannins. It is highly valued in agroecology for its ability to stabilize soil, prevent erosion, and support biodiversity. Companion plants include other nitrogen-fixing species and deep-rooted plants that benefit from improved soil structure.
Growing Details
Silver Wattle thrives in well-drained soils with full sun exposure. It can tolerate a variety of soil types, including sandy and loamy soils. Before planting, prepare the soil by incorporating organic matter to improve drainage and fertility. Mulching around the base helps retain moisture and suppress weeds. Companion plants include deep-rooted species like comfrey and dynamic accumulators such as yarrow. Avoid waterlogged conditions to prevent root rot. Harvest seeds when pods are dry and store
Edible Parts
Seed Flowers
Tags
Nitrogen Fixing Hedge Carbon Farming Attracts Wildlife Fire Wood Building Wood Scented Plant Windbreak Erosion Preventing Bee Friendly Invasive Visual Appeal Easy Propagating High Protein Colouring
Range (Based on GBIF Data)
The map shows known occurrence points of <strong>Acacia dealbata</strong> recorded in scientific biodiversity databases.
Source: <a href="https://www.gbif.org" target="_blank">GBIF.org</a> โ Global Biodiversity Information Facility
Location & Timing
native geo location: Native to southeastern Australia
applicable geo region: Australia
language used: en
Flowering:
beginning
of August for 60 days
Harvest:
middle
of October for 90 days
Seed Start:
beginning
of September
Indoor Start:
Transplant:
Uses & Benefits
Edible Rating:
(1/5)
edible uses: The flowers can be used in salads or as a garnish. The seeds, which are high in protein, can be roasted and ground into a flour. However, they should be cooked thoroughly to remove any potential toxins.
Medicinal Rating:
(2/5)
medicinal uses: The bark of Silver Wattle has astringent properties and has been traditionally used by Indigenous Australians to treat diarrhea and other ailments. It can be prepared as a decoction for topical or internal use.
health concerns: Some individuals may experience allergic reactions to pollen. The seeds should be cooked to neutralize any toxins.
other uses: The wood is used for fuel and timber, and the bark is a source of tannins for leather production. It is also used in land reclamation projects due to its rapid growth and soil stabilization properties.
Scientific Literature
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Botanical data
specie: Acacia dealbata
common names: Silver Wattle; Mimosa; Blue Wattle
family: Fabaceae
sub family: Mimosoideae
tribe:
sub tribe:
genus: Acacia
Growing Conditions
area needed: 10.0 m
spacing: 5.0 m
growing difficulty: Low
Deciduous / Evergreen:
Seed Temp (Opt/Min/Max): 20ยฐC / 15ยฐC / 25ยฐC
Plant Temp (Opt/Min/Max): 20ยฐC / 5ยฐC / 35ยฐC
water demands: Medium
humidity:
light demands: High
root type: Medium
frost tender: Medium
hardness:โโโโโโโโโโ(9/10)
first harvest: 3 years
life span: 30 years
succession: Pioneer
growth rate: Fast
max height: 30.0 m
max width: 10.0 m
soil preference:
Medium (Loam)
pH preference:
Neutral
flower type:
Hermaphrodite
growth details: Silver Wattle thrives in well-drained soils with full sun exposure. It can tolerate a variety of soil types, including sandy and loamy soils. Before planting, prepare the soil by incorporating organic matter to improve drainage and fertility. Mulching around the base helps retain moisture and suppress weeds. Companion plants include deep-rooted species like comfrey and dynamic accumulators such as yarrow. Avoid waterlogged conditions to prevent root rot. Harvest seeds when pods are dry and store
Potential Disturbances: Silver Wattle can be affected by root rot in poorly drained soils. To manage aphids, introduce beneficial insects like ladybugs and lacewings. For caterpillars, encourage parasitic wasps and use neem oil as an organic spray. Planting marigolds nearby can help repel nematodes.
Growth Timeline
Recipes Using This Plant
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