Lomandra filiformis
Lomandra filiformis · Asparagaceae
The gardener's calendar
Ideal time to plant lomandra filiformis: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- French name
- Threadleaf Lomandra
- Foliage
- Evergreen, fine and linear
- Flowering
- Spring to summer (discreet yellow flowers)
- Mature size
- 0.6 to 1 m in height, 0.5 to 0.8 m in width
- Growth
- Moderate
- Hardiness
- Temperate to warm climate, frost-sensitive
- Origin
- Australia (New South Wales)
- Soil type
- Well-drained, light, tolerant to poor
Care
Watering
Water regularly during the growing season (spring-summer), keeping the soil moist but without water pooling. Reduce watering in fall-winter. This plant tolerates drought well once established, but prefers moderate moisture.
Light exposure
Place your plant in full sun or partial shade. It appreciates bright light and thrives in sunny spots. Insufficient light will slow its growth and may result in less dense foliage.
Soil and substrate
Use well-drained, light, nutrient-poor soil. A mix containing sand or perlite reduces root rot risk. Avoid overly rich soils or constantly wet substrates.
Pruning and trimming
Regularly remove dead or damaged leaves to maintain a neat shape. You can lightly cut back the plant after flowering to encourage compact branching. Moderate pruning is generally sufficient.
Fertilization
Apply balanced or low-dose fertilizer in spring and early summer, once a month. Avoid excessive feeding, which can weaken the plant. Minimal nutrition is sufficient for this type of species.
Diseases and pests
Watch for scale insects or red spider mites in indoor or dry conditions. Root rot can occur if soil is too wet—improve drainage. Maintain good air circulation to prevent fungal issues.
Did you know?
Lomandra filiformis is a very popular Australian plant in modern landscape design, especially in Mediterranean gardens and xeriscapes, as it requires little water once established. Its fine, flexible leaves resemble hair, which partially explains its scientific name "filiformis" (thread-shaped). It plays an important ecological role in Australian ecosystems as a refuge for small animals.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
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Tips generated and checked by Viridia — adapt them to your local climate.