Soapbark Tree
Quillaja saponaria
Also listed as Leucoxyla saponaria, Quillaja molinae
Also known as Soapbark, Murillo's-bark
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A South American evergreen tree prized for its saponin-rich bark, which produces natural lather and has been used traditionally for soap-making and cleaning. Hardy and drought-tolerant once established, it grows at moderate speed and produces small white flowers.
Why grow it
Quillaja saponaria outperforms many ornamental evergreens in water-stressed climates while offering genuine utility through its saponin-rich bark. Unlike most decorative trees, it provides a functional harvest for soap-making and natural cleaning applications without requiring fertile soil or supplemental irrigation once established. For permaculture systems in Mediterranean or semi-arid regions, it combines moderate growth rate with minimal inputs and modest ornamental value.
Watch out for
Young trees benefit from consistent moisture during establishment and may take several years before bark saponin concentrations reach practical levels for harvesting. The tree can be slow to reach productive maturity, and aggressive pruning or repeated bark stripping may stress the plant or compromise its form. Growth performance varies notably with drainage and soil type, even within suitable climates.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Quillajaceae
Native Range
Central Chile
Seasonality
Bloom Season
Season of Interest
Sub-canopy
Smaller trees living beneath the canopy.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
A South American evergreen tree prized for its saponin-rich bark, which produces natural lather and has been used traditionally for soap-making and cleaning. Hardy and drought-tolerant once established, it grows at moderate speed and produces small white flowers.
Climate Match for your location
See how well Soapbark Tree grows in your area.
Enter your ZIP code and we'll show you how this plant fits your local climate.
Why grow it
Quillaja saponaria outperforms many ornamental evergreens in water-stressed climates while offering genuine utility through its saponin-rich bark. Unlike most decorative trees, it provides a functional harvest for soap-making and natural cleaning applications without requiring fertile soil or supplemental irrigation once established. For permaculture systems in Mediterranean or semi-arid regions, it combines moderate growth rate with minimal inputs and modest ornamental value.
Watch out for
Young trees benefit from consistent moisture during establishment and may take several years before bark saponin concentrations reach practical levels for harvesting. The tree can be slow to reach productive maturity, and aggressive pruning or repeated bark stripping may stress the plant or compromise its form. Growth performance varies notably with drainage and soil type, even within suitable climates.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Quillajaceae
Native Range
Central Chile
Seasonality
Bloom Season
Season of Interest
Sub-canopy
Smaller trees living beneath the canopy.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
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