Commonly known as the Green Mat-Rush or Creek Mat-Rush, Lomandra hystrix is a perennial, grass-like plant native to eastern Australia, particularly Queensland and New South Wales. It thrives in moist environments, often found along creeks and rivers.
This robust, tufted herb features flat, glossy green leaves that typically range from 90 to 130 cm in length and 5 to 10.5 mm in width. The leaf tips are acute, sometimes displaying 2 to 4 minute lateral teeth below the apex. In spring and summer, it produces fragrant yellow flower clusters on spikes that can reach up to the length of the leaves.
Due to its adaptability, Lomandra hystrix is popular in landscaping for erosion control and revegetation projects. It tolerates a variety of soil types, including sandy and clay soils, and can withstand both drought and periodic flooding. Its dense root system helps stabilize soil, making it ideal for planting along waterways and slopes.
Several cultivars have been developed for ornamental use, such as ‘Tropic Belle’ and ‘Katie Belles’, which offer more compact forms and abundant fragrant flowers.
Lomandra Hystrix (*Lomandra hystrix*), also known as Mat Rush, thrives in full sun to partial shade. This hardy, versatile grass is ideal for garden beds, borders, and riparian zones, and can also handle areas with occasional waterlogging, making it suitable for rain gardens and swales. It forms dense clumps, providing year-round structure and texture. Ensure the planting site has well-draining soil, though Lomandra Hystrix can tolerate a variety of soil moisture levels.
Lomandra Hystrix is suited to a range of climates, from temperate to subtropical, and grows best in temperatures between 10°C and 30°C. It is frost-tolerant and adaptable, making it suitable for Australian gardens. This species is particularly resilient and performs well even in difficult, low-maintenance landscape applications.
Plant Lomandra Hystrix in well-draining to moderately moist soil. It adapts well to sandy, loamy, or clay soils and can handle occasional waterlogging. The ideal pH is slightly acidic to neutral (6.0-7.5). Adding organic matter, such as compost, can improve soil structure and support healthy growth.
Feed Lomandra Hystrix with a balanced, slow-release fertiliser in early spring to support robust growth. Generally, minimal fertilising is required, but an annual application of compost can help maintain soil health and foliage color.
Water regularly during the first year to help establish strong roots. Once mature, Lomandra Hystrix is highly drought-tolerant and requires minimal watering, though occasional deep watering during dry spells will keep it looking its best.
Trim back old flower spikes and any dead foliage in late winter or early spring to maintain a tidy appearance. Lomandra Hystrix can handle a hard prune if needed, which encourages fresh growth.
Generally resistant to pests and diseases, making it a low-maintenance choice. Good air circulation helps prevent potential fungal issues, particularly in humid environments.
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