How to grow westringia
Overview
Westringia fruticosa is a dense, evergreen shrub from the Lamiaceae family, valued for its fine grey-green foliage and small white flowers. It is a versatile hedging and screening plant that thrives in coastal and dry inland gardens, providing year-round structure and texture.
Varieties
- Westringia fruticosa 'Smokey' — A compact, grey-foliaged form ideal for low hedges and borders.
- Westringia fruticosa 'Wynyabbie Gem' — Vigorous, larger-leaved variety with mauve flowers, good for screening.
- Westringia fruticosa 'Blue Gem' — Dense, blue-grey foliage with a tidy habit, popular in coastal gardens.
Soil Preparation
Westringia prefers slightly acidic to neutral soil (pH 6.0–7.0) with sharp drainage. Amend heavy clay with gypsum or coarse sand; for sandy soils, add a little organic matter to improve moisture retention without waterlogging.
Growing Guide
Plant Westringia in full sun with well-drained soil; space 60–80 cm apart for a dense hedge. Dig a hole twice the width of the root ball, backfill with native soil, and water in well. Avoid heavy clay or waterlogged sites; if needed, raise the bed or add gravel for drainage. Mulch lightly with organic matter to retain moisture while keeping the crown dry.
Care
Feed with a slow-release native fertiliser in early spring. Prune lightly after flowering to maintain shape and density; avoid cutting into old wood. Remove any dead or diseased branches as needed.
Companion Planting
Pair Westringia with other Australian natives like Grevillea, Callistemon, and Hardenbergia for a cohesive garden. Avoid planting near heavy feeders like vegetables or annuals that require constant watering, as this can disrupt the shrub's natural drought tolerance.
Common Pests & Risks
Scale insects can appear on stems and leaves; treat with horticultural oil or systemic insecticide. Root rot in wet soil is a risk; ensure excellent drainage and avoid overwatering. Monitor for spider mites in dry spells.
Harvesting
Harvest not relevant.
Troubleshooting
Yellow leaves: often from overwatering or poor drainage; reduce water and check soil. Brown leaf tips: caused by salt spray or dry air; rinse foliage or improve humidity. Sparse growth: too much shade; move to full sun. Leggy stems: lack of pruning; trim lightly after flowering. Leaf drop: sudden temperature change or frost; protect young plants.