Close this search box.

Palo Blanco

Acacia willardiana


Palo blanco (white stick) is a small to medium size deciduous tree with an upright habit and open branching character that can grow 15-25 ft. tall and 10-15 ft. wide. Tiny green leaves are attached to 6-10 in. long narrow petioles that gracefully hang from thin branches. Creamy-white flower spikes occur in late spring, occasionally throughout the year, and are followed by flattened seed pods to 4-6 in. long.

Palo blanco is native to the state of Sonora, Mexico. In recent years it has become a popular choice for use in southwestern style gardens as a feature tree in courtyards, entry planters and in small spaces. These uses display its delicate branching, graceful weeping habit and distinctive peeling bark. It is often planted near boulders and among plants that have bold forms such as agaves, yuccas and cacti to achieve striking contrast and compositions. This is a slow growing species that needs careful staking for trunk support as it matures. It grows well in warm inland habitats in sunny spots with low amounts of water.

Plant Type: Tree
Foliage Character: Winter deciduous
Habit: Open, Narrow, Graceful, Delicate, Upright
Growth Rate: Slow
Foliage Color: Light green
Flower Color: White
Flower Season: Spring
Soil Adaptations: Well-draining soil, Rocky soil, Clay
Exposure Adaptations: Heat, Drought, All day sun
Function: Courtyard and patio tree, Specimen, Foundations, Foliage accent plant
Height: 15 ft. – 25 ft.
Width: 10 ft. – 15 ft.

Set your preferred view

Choose between a list or map view of all signs found in our waterwise garden and park.

Welcome to the Waterwise Garden Digital Tour

This is a digital registry created to offer further information on the physical signs in our waterwise garden and park premises.

Would you like a few tips on how to use this tool?

Move around

Travel to different sections of our garden and park premises by using the horizontal scrollbar at the top.

Locate your sign​

Using the map view, you can preview what each specific sign is about by tapping on the plus icon.

Refer back to these tips

You can view these tips at any time by tapping the Help link in the top left.