Acacia Species, Silver Wattle

Acacia dealbata

Family: Fabaceae (fab-AY-see-ee) (Info)
Genus: Acacia (a-KAY-see-uh) (Info)
Species: dealbata (day-al-BAH-tuh) (Info)



Water Requirements:

Unknown - Tell us

Sun Exposure:

Full Sun



Foliage Color:



20-30 ft. (6-9 m)


8-10 ft. (2.4-3 m)

10-12 ft. (3-3.6 m)

12-15 ft. (3.6-4.7 m)


USDA Zone 10a: to -1.1 °C (30 °F)

USDA Zone 10b: to 1.7 °C (35 °F)

USDA Zone 11: above 4.5 °C (40 °F)

Where to Grow:

Unknown - Tell us


Parts of plant are poisonous if ingested

Bloom Color:

Bright Yellow

Bloom Characteristics:

Flowers are fragrant

Bloom Size:

Unknown - Tell us

Bloom Time:

Late Winter/Early Spring

Mid Spring

Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:


Propagation Methods:

Scarify seed before sowing

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Properly cleaned, seed can be successfully stored


This plant has been said to grow in the following regions:


Fresno, California

San Leandro, California

Santa Barbara, California

Austin, Texas

Grafton, West Virginia

show all

Gardeners' Notes:


On Feb 9, 2018, BayAreaTropics from Hayward, CA wrote:

This tree has naturalized in bands around the SF eastbay. Interesting to see it favors low hills and slightly down into ravines.
Beautiful weed tree. Largest are near creeks or of course in watered gardens.
Cattle keep it in check.
Its said to have roots that can keep any other plant species from growing near it. Poisonous. I cant say if that's 100% true.


On Apr 25, 2010, peejay12 from Porthleven, Helston, Cornwall,
United Kingdom (Zone 9b) wrote:

I would agree with stephen p. This plant can tolerate -6 or -7C, although much of the top growth may be killed, but it will readily sprout again.

This has to be the most beautiful evergreen tree we can grow in the U.K.,although there are some feathery-leafed acacias which are almost as beautiful and slightly hardier (Acacia mearnsii, deanei and decurrens).

Unfortunately for me, the winds in Cornwall literally tear the leaves to shreds in the winter - so the evergreen tree effectively becomes deciduous in the winter- which destroys the whole purpose of growing it. A plant nearby seems to do better, so it pays to experiment a bit when positioning them. But I've not seen many growing in coastal regions of Cornwall.


On Nov 16, 2009, stephenp from Wirral, UK, Zone 9a,
United Kingdom (Zone 9a) wrote:

Very surprised this is rated as a zone 10 plants, there's no way this is the case, there is mature Acacia dealbata on my peninsula, and a fairly large one in the areas botanic garden. It flowers without fail every Spring and produces a great display.

It fits in well with the local flora, I no longer see this tree as an exotic.


On Mar 16, 2007, berrygirl from Braselton, GA (Zone 8a) wrote:

Acacia dealbata SILVER WATTLE EG (z8) (Cut,Fra,Hon)
The popular golden 'Mimosa' of florists, the fern-like leaves of this lg.shrub/sm.tree are silvery-grn & the e.spr. flowers are fragrant.Sun/M-D


On Feb 17, 2003, kennedyh from Churchill, Victoria,
Australia (Zone 10a) wrote:

Grows easily from seed, but the seed has a hard case and can lie dormant for 50 years or more. Usual technique for germination is to pour boiling water onto seed and allow to cool in the water before sowing. This usually results in a good germination even with very old seed.


On Mar 10, 2002, philomel from Castelnau RB Pyrenées,
France (Zone 8a) wrote:

This tree is fast growing. It has attractive evergreen, ferny foliage and the trunk and branches are very ornamental, being bluey green with contrasting areas. Even the seed pods are colourful - sealing wax red when ripe, and translucent seen against the sky.
The scent is heavenly, but not too overpowering.