Wattle trees (Acacia species) are iconic Australian natives prized for their golden flower displays, fast growth, and wildlife value in home gardens. With over 1,000 species, they suit various garden sizes and conditions, from small shrubs for courtyards to screening trees, flowering across every month of the year.
This guide covers top garden varieties, a year-round flowering calendar, care tips, and FAQs to help select and grow the right wattles.
Used by early settlers as a building material (wattle and daub) the flexible young saplings were woven together and then coated with a mixture of mud and dung.
What are Wattle Trees?
Wattle refers to Australian Acacia species, ranging from compact shrubs to medium trees used for features, screens, or windbreaks. Early settlers wove young wattle stems into “wattle and daub” walls coated with mud for housing. Modern gardeners value their phyllodes (flattened leaf stalks), drought tolerance, and masses of pollen-rich yellow flowers that attract birds and bees.
Best Wattles for Gardens
Select species by garden needs for optimal results. Link each to species profiles or categories where available (e.g., /plants/acacia-pycnantha/).
- Golden Wattle (Acacia pycnantha) – Australia’s floral emblem; small tree (5-8m) with fragrant late-winter flowers; full sun, well-drained soils.
- Cootamundra Wattle (Acacia baileyana) – Showy winter bloomer (6-10m); fast but check weed status in VIC/NSW before planting.
- Silver Wattle (Acacia dealbata) – Rapid screen (10-15m) for cool climates; silvery foliage.
- Narrow-leaf Bower Wattle forms (Acacia cognata) – Weeping dwarfs like ‘Mini Cog’ or ‘Limelight’ (1-4m) for small/modern gardens.
Small Wattles for Compact Gardens
- Acacia aphylla, Acacia suaveolens, Acacia genistifolia
- Dwarf Acacia cognata cultivars for containers or borders
Fast-Growing Wattles for Screening
- Acacia floribunda (gossamer wattle, hedgeable).
- Acacia maidenii, Acacia pendula (silvery weeping).
- Acacia melanoxylon (longer-lived timber tree).
Wattles for Wet or Coastal Soils
- Acacia retinodes (Wirilda, tolerates clay).
- Acacia verticillata (damp sites).
- Acacia salicina (Willow Wattle, drought/coastal hardy).
Wattle Tree Varieties
The Black Wattle or Acacia mearnsii was probably the most widely used by both early settlers and aboriginals.
The Golden Wattle or Acacia pycnantha is the floral symbol of Australia and is found widely across South Eastern Australia (Victoria and South Australia)
The well known Cootamundra Wattle Acacia baileyana was widely planted as a flowering ornamental tree, and in it’s natural environment in the Snowy Mountains it looks magnificent. However it does have a tenancy to ‘self seed’ and is regarded as a weed in some areas. Wattle trees set seed in pods, the pods dry out over the summer months and then pop open spreading small black seeds widely around the surrounding area. Seeds are particularly tough and actually require a fair amount of heat to germinate.
The Silver Wattle or Acacia delebatais widespread along the East Coast from NSW to Tasmania. Acacia boormanii is the SnowyRiver Wattle.
Flowering wattles tend to be fairly short lived, so if used as a feature tree or landscaping tree they need to be replaced as they age and begin to drop branches, however not all ‘Wattles’ grow the same way. When we move away from the stereotype flowering tree we begin to look at some very useful landscaping species as well as timber producing species such as the Blackwood or Acacia melanoxylon.
Wattle trees are fast growing and are therefore very useful if you are looking to establish a quick screen or windbreak while waiting for slower growing but longer lasting species to become established. Fertilizer is rarely required and once established wattle trees are regarded as drought tolerant.
Interesting species such as the ‘Leafless Rock Wattle’ or Acacia aphllya (pictured below left) which is regarded as a succulent can make a fascinating addition to the garden.
Many species such as Acacia floribunda or ‘White Sally Wattle’ and Acacia cognata will grow well and will flower in part shade or light shade.
Wattle Trees Flowering Calender
With careful selection you could have year round flowers. We look at a list of well known species, the growth habit and when they flower.
| Month | Key Species (examples) | Height & Habit | Notes |
|---|---|---|---|
| January | Acacia uncinata (Weeping), Acacia retinodes | 3-8m, weeping/small tree | Good drainage; wet soils OK. |
| February | Acacia glaucoptera (Clay) | Low spreading shrub | Bronze new growth. |
| March | Acacia conferta | Tough shrub | Drought/frost hardy hedge. |
| April | Acacia kempeana | Spreading | Autumn start in north. |
| May | Acacia auriculiformis (Northern Black) | Tree/shrub | Tropical flush. |
| June | Acacia podalyriifolia (QLD Silver) | Small tree | Early winter.l |
| July | Acacia pycnantha (Golden), A. baileyana | 5-10m tree | Peak in many areas. |
| August | Acacia acinacea, A. gracilifolia (SA) | Shrub | Wattle Day in QLD. |
| September | Acacia mearnsii (Black) | Tall tree | Extended to December. |
| October | Acacia aneura (Mulga, WA) | Shrub/tree | Post-rain trigger. |
| November | Acacia rubida (Red-stem) | Shrub | ACT late season. |
| December | Acacia pycnantha stragglers | Small tree | Edible seeds.l |
More Wattle Tees To Consider
