How to grow wattle mat rush
Overview
Wattle mat rush (Lomandra confertifolia) is a compact, clumping grass-like perennial from the Asparagaceae family, grown for its fine, arching foliage and subtle texture. It provides rhythm and softness in garden beds, and is valued for its low-maintenance, drought-tolerant nature once established.
Varieties
- Lomandra confertifolia 'Little Con' — Compact dwarf form, 30 cm tall, ideal for small gardens and borders.
- Lomandra confertifolia 'Seascape' — Fine, blue-green foliage, very drought-tolerant, suited to coastal gardens.
Soil Preparation
Prefers free-draining sandy loam or clay loam with a pH of 6.0–7.5. Improve heavy clay with gypsum and organic matter. Avoid waterlogged sites; if drainage is poor, plant on a mound or in a raised bed.
Growing Guide
Plant in well-drained soil in a position that receives bright, filtered light or morning sun with protection from harsh afternoon heat. Space plants 30–40 cm apart for a dense groundcover effect. Dig a hole twice the width of the root ball, backfill with native soil, and water in well. Apply a light mulch layer to retain moisture without touching the crown. Best planted in autumn or early spring in temperate zones to allow root establishment before summer.
Care
Feed with a slow-release native fertiliser in early spring. Trim back old or damaged foliage in late winter to maintain a tidy shape. No regular pruning needed beyond removing spent leaves.
Companion Planting
Pairs well with Dianella caerulea (flax lily) and Westringia fruticosa (coastal rosemary) for a cohesive native garden look. Avoid planting near heavy feeders like citrus or large shrubs that may compete for moisture and nutrients.
Common Pests & Risks
Generally pest-free, but occasionally watch for scale insects on older foliage. Treat with a horticultural oil spray in early spring if needed. Mealybugs may appear in humid conditions; control with a strong water jet or insecticidal soap.
Troubleshooting
Yellow leaves: caused by overwatering or poor drainage; reduce watering and improve soil drainage. Brown leaf tips: caused by dry air or salt build-up; flush soil with fresh water and increase humidity. Sparse growth: caused by too much shade; move to a brighter position with morning sun. Leaf browning in winter: normal in cold zones; trim back in spring. Stunted growth: caused by nutrient deficiency; apply a slow-release native fertiliser.