Introduction
Kangaroo grass (Themeda triandra) is one of Australia’s most iconic native grasses, valued for its ecological resilience, versatility in landscaping, and ability to thrive in diverse environments. It is found in all states of Australia as well as in New Guinea and parts of Asia and Africa. At Native Seeds, having worked extensively with Kangaroo grass we have seen firsthand how valuable it is for ecological restoration, landscaping and sustainable agriculture. Whether you’re a landscape architect, a conservationist, or a home gardener, incorporating kangaroo grass into your projects can offer numerous benefits for both aesthetics and sustainability.
Types and Varieties
Kangaroo grass (Themeda triandra) is one of the most adaptable native grasses, occurring across a broad range of climates and soil types. This warm-season, deep-rooted perennial grows in a soft, tussocky form, with long, slender leaves that change from green to red, brown, or purple as they mature. It typically grows between 40 to 200 cm, producing distinctive rusty-red seedheads throughout summer. While seedheads commonly range from 50 to 80 cm in length, we have observed seedheads reaching up to 1.5m in our production blocks. Unlike some grasses that spread via underground runners, kangaroo grass propagates primarily by seed, though certain types may occasionally produce daughter plants through extended stolons. In southern and cooler climates, it remains dormant through winter before resuming growth in warmer months. We’ve seen that distinguishing Themeda triandra from other species, such as Themeda quadrivalvis (grader grass), is essential in maintaining ecological balance and ensuring the success of native revegetation projects.
Soils
Kangaroo grass is commonly found in remnant plains grasslands and sclerophyll forests, red gum and box woodlands as well as open grassy forests. It is highly adaptable, growing in a variety of soils ranging from sand to heavy clays. It also grows in soils of low to moderately high pH. Because of its very ‘plastic genetics, the plant is able to modify its form according to variable environmental conditions and the species has formed many distinct types. Tolerances:
- High drought tolerance
- High heat tolerance
- Low to moderate frost tolerance
- Moderate to good feed value when actively growing
- High tolerance to fire
Growing Guide
From our trials, we’ve found that kangaroo grass is a hardy, low-maintenance perennial that thrives in well-drained soils and full sun. While it prefers warm conditions for germination, making spring – early summer the ideal time, sowing can occur year-round, as the seed will remain dormant in the soil over winter if necessary. Key considerations for successful cultivation:
- Site Preparation: Compacted soil can significantly reduce seedling recruitment.
- Soil Requirements: Adapts well to a range of soil types, from sandy loams to heavier clays, provided drainage is adequate.
- Watering Needs: Once established, kangaroo grass requires minimal watering. Young plants benefit from occasional deep watering to promote root growth. The seedlings do not require any nutrients or feeding when establishing.
- Maintenance: During the establishment period it’s important to reduce the amount of competition from faster growing weeds, this can be achieved by careful spot spraying or manual weed removal. Once established Kangaroo grass is low maintenance, In natural settings, fire helps rejuvenate kangaroo grass. In gardens or landscaping, occasional mowing or pruning every few years helps maintain plant health.
- Growth Cycle: We’ve seen seasonal colour changes, with green foliage in warmer months shifting to reddish-brown in winter.
Uses and Benefits
Kangaroo grass offers significant advantages for both environmental and aesthetic applications:
- Ecological Benefits: Supports native biodiversity by providing habitat and food for insects and small wildlife. Its deep root system also enhances soil health and prevents erosion.
- Sustainable Landscaping: Requires little irrigation, no fertilisers, and thrives in low-nutrient soils, making it an excellent choice for sustainable, low-maintenance landscapes.
- Revegetation & Restoration: Commonly used in land rehabilitation projects due to its ability to stabilise soil and compete with invasive species.
- Aesthetic Appeal: With its fine, arching leaves and distinctive seed heads, kangaroo grass adds movement and texture to landscapes, complementing native plant designs.
- Pasture: It provides good fodder when actively growing and is best when intermittently grazed
- Traditional Uses: Indigenous Australians historically harvested the seeds for food, highlighting the plant’s cultural significance.
Features of Kangaroo grass
| Feature | Kangaroo Grass (Themeda triandra) |
| Drought Tolerance | High |
| Growth Habit | Tussock-forming, upright |
| Soil Preference | Well-drained, sandy to clay |
| Maintenance | Low |
| Best Use Cases | Landscaping, erosion control |
Buying Kangaroo Grass Seeds
Kangaroo grass seed is available in a number of forms, the three main ones being, harvested florets, Seed & awns and nursery grade seed. The price will vary according to the form the seed is sold, with harvested florets being the cheapest and Nursery grade the most expensive. This price difference is a reflection of the % of actual seed present in each form.
Harvested florets are often sold in the same form in which they were harvested, requiring no processing in the shed apart from drying. In this form you can expect to receive 3-7% of actual seed by weight. This product is very bulky and usually requires hand spreading.
The Seed & Awn products have been cleaned down to remove the majority of the stalks and florets and can contain up to 15 -25% of actual seed. This product is also difficult to handle and quite often requires hand spreading.
At Native Seeds, we clean our Kangaroo grass seed down to Nursery grade, removing 80% of the awn which results in a product that contains 40-60% of actual seed and can be mechanically spread.
Why choose Native Seeds?
- Expertise You Can Trust – With over 25 years of experience in growing and establishing native grassland species from seed, we are in a unique position to provide guidance to help ensure your projects long-term success.
- Sustainable & Ethical Sourcing – The majority of our seed is sourced from our own seed production farms reducing the impact on natural grasslands. Our commitment to sustainable seed harvesting ensures that native grasslands continue to thrive.
- Reliable Germination & Quality – All our seed undergoes independent testing by internationally accredited seed labs for purity and viability. Allowing complete visibility into the quality of the seed you are purchasing.
- Support & Advice – Whether you’re seeding a small garden or a large-scale restoration project, our team is here to help.
By choosing Native Seeds, you’re not only investing in high-quality native grass seed but also supporting the ongoing restoration of Australia’s natural flora.