Nyalla lomandra

Sun

Full sun to partial shade; the densest growth and strongest foliage colour develop in good light.

Water

Water regularly during the first growing season. Once established, water during prolonged drought; container plants need watering more often.

Soil

Well-drained sand, loam or clay. Tolerates relatively poor soil, but avoid sites that remain waterlogged, especially in winter.

Height

2.5-3 ft (0.75-0.9 m)

Spread

2.5-3 ft (0.75-0.9 m)

Flowers

Small cream to pale yellow flowers in clustered spikes among the leaves, mainly in spring and summer; flowering varies with climate.

Foliage

Evergreen. Narrow, tough, blue-green strap-shaped leaves, upright at the base and arching towards the tips.

Growth

Moderate; forms a substantial clump over several growing seasons.

Care needed

Low

• Deer resistant
• Drought tolerant
• Heat tolerant
• Disease resistant
• Wildlife

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Moderate

Toughness

Fairly tough

Pick your zone, country, light and whether you have pets.

1. Planting day

   1 ft (0.3 m)

2. After 1 year

   1.6 ft (0.47 m)

3. After 2 years

   2.1 ft (0.65 m)

4. After 3 years

   2.7 ft (0.83 m)

   full size

About 3 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Mildly toxic: may upset a stomach

Native to

Australia

Growth rate

Moderate

• Plant with the crown at soil level and allow room for the mature clump.
• Water deeply during establishment, allowing the soil surface to dry between waterings.
• Apply a light dose of slow-release fertiliser in spring if growth is weak; avoid heavy feeding.
• Keep mulch clear of the crown to reduce persistent dampness around the leaf bases.
• Use a container with drainage holes in cold regions and move it under cover before hard freezes.

Pruning. Remove dead leaves and spent flower stems near the base in spring. If an established clump becomes badly untidy, cut it back to about 6-8 in (15-20 cm) above ground in late spring, once frost risk has passed; routine annual shearing is unnecessary.

Spring

Plant after the risk of severe frost has passed, or inspect established plants and remove winter-damaged leaves.

Late spring

Renovate untidy clumps if needed and apply a light feed where growth is poor.

Summer

Water new plants deeply during dry spells and check containers frequently.

Late summer

Remove spent flower stems if they detract from the foliage.

Autumn

Check drainage before wet weather and move container plants under cover in cold regions.

Winter

Keep sheltered container plants in bright light and water sparingly without letting the root ball dry out completely.

• Repeat clumps along paths or driveways for a consistent, arching foliage edge.
• Mass on sunny banks for permanent cover and a strong blue-green texture.
• Combine with upright shrubs and broad-leaved perennials to contrast leaf shapes.
• Use in large containers beside entrances or on terraces.
• Plant in coastal gravel gardens with other salt- and drought-tolerant plants.

Garden styles it suits: Australian native, Coastal, Contemporary minimal, Dry gravel garden, Low-maintenance and Modern Mediterranean.

Plant it with: Kangaroo paw, Westringia, Bottlebrush, Lavender, Agapanthus and Yarrow.

Wildlife: Dense clumps provide shelter for small invertebrates. Flowers may attract visiting insects, although this cultivar is grown chiefly for foliage rather than as a major nectar plant.

• Crown or root rot in persistently wet soil: improve drainage, reduce watering and replace badly rotted plants.
• Winter leaf scorch or crown loss near its cold limit: choose a sheltered position, avoid wet winter soil and protect container plants from hard freezes.
• Brown leaf tips during establishment or in containers: check root-ball moisture and water deeply rather than giving frequent small splashes.
• Sparse, floppy growth in deep shade: move to a brighter position and avoid excessive fertiliser.

Not known to be toxic to cats, dogs, horses or people, and no part is recognised as a significant poisoning hazard. Cultivar-specific safety information is limited; discourage chewing, as the tough leaves and pointed flower structures can cause physical irritation.

• Spiny-headed mat rush (Lomandra longifolia)

  Ordinary seed-grown plants are more variable and commonly have broader, greener leaves; Nyalla is selected for narrower blue-green foliage and a consistent arching habit.

• Tanika lomandra (Lomandra longifolia 'LM300')

  Tanika usually forms a shorter, finer-textured mound with greener foliage; Nyalla is generally taller and more blue-green.

• Flax lily (Dianella species)

  Flax lilies generally have more distinctly fan-arranged leaves, blue or violet flowers and often blue berries; lomandra has clustered cream-yellow flowers and dry fruits.

Lomandra comes from Greek words referring to the bordered anthers, while longifolia means long-leaved.

Propagation. Division preserves the cultivar, whereas seedlings will not reliably resemble it. Nyalla is commonly sold under the cultivar name 'LM400' and may be subject to plant breeders' rights or other propagation restrictions; check local protection before multiplying plants.

Accepted botanical name

Lomandra longifolia

Native range

New South Wales, Queensland, South Australia, Tasmania and Victoria.

Measured

Average height 80 cm.

Sources: GBIF (CC BY 4.0) and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.