Plant Communities for Erosion Control

Building resilient, functional landscapes with complementary Australian native plants

Soil erosion remains a critical challenge in Australian landscapes, particularly on sloping sites, embankments, and exposed ground. A well-designed planting scheme is a powerful, sustainable way to stabilise soils while adding biodiversity and visual appeal. But effective erosion control is rarely achieved with a single species. Instead, plant communities — designed with complementary root systems, growth forms, and canopy layers — create a more stable, resilient and self-reinforcing system.

Below is a recommended palette of Australian native plants that work synergistically to combat erosion. Each has a specific function in the community, and if substitutions are required, this guide provides suitable alternatives performing similar roles.

Ozbreed’s erosion control plant palette.

Why Plant Communities Work

Soils erode from both surface and subsurface forces: rainfall impact, overland flow, and gravity/waterflow at depth (a terrifying thought that the surface looks fine but the subsoil is shifting). Combining plants with:

• Fibrous surface roots for topsoil stabilisation
• Deep anchoring roots for subsoil stability
• Ground-covering foliage to deflect rainfall and slow runoff

…provides multi-layered protection against all of these forces. Using species that thrive in local conditions while tolerating stress (wet, dry, compacted soils, temperature, humidity, etc) increases durability and reduces maintenance over time.

Recommended Erosion Control Palette

1. Ozbreed Zen Grass® Zoysia native hybrid ‘ZOY01’ PBR

• Function: Dense, fibrous-rooted mat that hugs the surface, suppresses weeds, and reduces topsoil loss. Mow once per year in QLD, and potentially less frequently in milder climates.
• When to Use: At the immediate soil surface, particularly in high-foot-traffic areas, or at the edge of slopes. Beware that it is quite vigorous and may outcompete or ramble over other groundcovers in the same bed.
• Substitution Tips: Many turfgrasses will perform a similar function, however will generally require more mowing.

2. Lucia™ Dianella caerulea ‘DC101’ PBR

• Function: Clumping strappy plant with fibrous roots that reinforce the topsoil and withstand periods of wet or dry.
• When to Use: In the mid-slope or flat areas to knit soil together and provide evergreen texture. Just avoid wet feet.
• Substitution Tips: In wetter or heavier soils, try Shara™Lomandra fluviatilis ‘ABU7’ PBR or Baby Breeze™ Dianella ‘DCNC3’ PBR Intended.

3. Nafray® Cenchrus purpurascens ‘PA300’

• Function: A robust grass with deep and fibrous roots, adding strong erosion control and visual softness.
• When to Use: On slopes or dry creek beds where taller grasses are desired to slow runoff, capture particulates and stabilise subsoil. Tolerates periodic flooding.
• Substitution Tips: For a larger variety in dry feet, opt for Cream Lea® Cenchrus purpurascens.

4. Ground Hug™ Myoporum insulare ‘MYIN01’ PBR

• Function: Prostrate groundcover with dense foliage that shields soil, slows water, and suppresses weeds. Fast stoloniferous spreader.
• When to Use: Allow it to ramble between taller plants to fill the gaps. Beware it’s quite an aggressive plant, which you want in an erosion control context, but it could smother weaker plants if they can’t keep up.
• Substitution Tips: For a variety that won’t spread as much with grey-blue foliage, opt for Aussie Flat Bush™ Rhagodia spinescens‘SAB01’

5. Macarthur™ Callistemon viminalis ‘LC01’ PBR

• Function: Medium-sized shrub/small tree providing vertical structure, deep anchoring roots, and seasonal flowering.
• When to Use: As the mid-to-upper canopy layer to stabilise subsoil and intercept rainfall.
• Substitution Tips: In smaller spaces or along roadsides, Slim™ Callistemon viminalis ‘CV01’ PBR offers a narrower profile.

6. Sweeper® Waterhousea floribunda ‘DOW20’ PBR

• Function: Tall canopy tree with weeping habit, providing shelter, deep root anchorage, and slope stability.
• When to Use: Where space permits, often on the upper slope to avoid constant wet feet.
• Substitution Tips: On tighter sites, Luscious® Tristaniopsis laurina ‘DOW10’ PBR offers a more compact width but still effective deep-rooting tree. Alternatively, you can lift either tree to provide more understory space.

7. Katie Belles™ Lomandra hystrix ‘LHBYF’ PBR

• Function: Robust strappy plant with fibrous roots and tolerance of wet conditions, excellent on banks and swale edges.
• When to Use: Anywhere water concentrates; excels in both periodic dry slopes and wet depressions.
• Substitution Tips: For a smaller, neater look, Tropic Cascade™ Lomandra hystrix ‘LHWP’ PBR performs similarly in confined spaces.

Best Practice Tips

• Combine plants from different layers (ground, shrub, canopy) for full coverage and redundancy.
• On steep slopes, alternate species in rows or clusters to create a mesh of roots and foliage.
• Prioritise density early on — closer planting in year one pays dividends in soil stability.
• Consider maintenance access routes for crews to access vegetation when required.
• Where possible, match substitutions to site-specific conditions (e.g. wetter areas, wind exposure, aesthetics, client specifications).

Conclusion

Erosion control is not a one-plant solution. Instead, it relies on thoughtfully composed plant communities that work together to protect soil at multiple levels. The Ozbreed Erosion Control Palette offers a well-tested collection of Australian native plants suited to this task, with proven performance across diverse site conditions.

By understanding the role of each plant in the system — and knowing how to substitute when necessary — specifiers and landscapers can deliver landscapes that are both functional and attractive, even under challenging conditions.

For further guidance, consult the full Ozbreed catalogue and speak with your supplier to ensure the right plants are matched to your site.