How to Grow Westringia 'Long Leaved'

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Westringia 'Long Leaved'

Westringia fruticosa 'Long Leaved'

shrub

Westringia 'Long Leaved' is an ornamental evergreen shrub native to Australia, valued for its attractive elongated foliage and delicate lavender-blue flowers. This cultivar is particularly prized for its narrow, linear leaves that create a fine-textured appearance in gardens. It is drought-tolerant once established and works well as a hedging plant, screen, or specimen shrub in Mediterranean and coastal gardens.

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Example Westringia 'Long Leaved' timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Westringia 'Long Leaved'

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Westringia 'Long Leaved'

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Westringia 'Long Leaved' dates for your own zip code.

Growing Conditions

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Sun: Full sun, 6-8 hours daily minimum; tolerates partial shade but flowers more prolifically in full sun
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Water: Low to moderate water needs once established. Water regularly during first growing season to establish deep roots. Mature plants are drought-tolerant; water deeply but infrequently. Reduce watering in winter. Avoid overwatering, which causes root rot and poor growth.
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Spacing: 24 inches
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Days to maturity: 18-24 months for landscape-ready size; flowers may appear within first year
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Planting depth: Same depth as root ball; do not plant deeper than soil line in nursery pot

Soil

Type: Well-draining sandy or loamy soil; tolerates poor soil quality
pH: 6.0-7.5
Amendments:
Coarse sand or perlite for drainage Minimal organic matter (excessive fertility not needed) Gravel or crushed stone mulch preferred over wood chips

Growing Zones

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Thrives in USDA zones 9b-11; tolerates brief frosts to around 25°F (-4°C) when mature

9b 10a 10b 11a 11b

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Growth Stages

1

Establishment

2-4 months

Young shrub with initial foliage growth and shallow root system; plant is relatively tender

Water regularly 2-3 times weekly; provide afternoon shade in hot climates; avoid fertilizer or use very dilute applications; mulch lightly around base (not touching stem)

2

Vegetative Growth

3-6 months

Steady expansion of stems and long linear leaves; plant becoming bushier and more resilient

Gradually reduce watering frequency as roots deepen; begin light shaping pruning if desired; monitor for pests; no fertilizer needed on poor soils

3

Flowering

2-4 months (varies by climate; typically spring-summer, may extend year-round in mild zones)

Small lavender-blue or occasionally white flowers appear along stems; blooms are tubular and attract pollinators

Maintain moderate water during peak bloom; deadheading extends flowering but is optional; avoid heavy pruning during flowering season

4

Maturation & Maintenance

Ongoing (plant is long-lived, 15+ years)

Fully established, dense shrub with thick woody stems and extensive root system; highly drought-tolerant

Water only during extended droughts; light pruning annually to maintain shape and encourage dense branching; no fertilizer required; prune immediately after flowering to encourage next flush

Companion Planting

Plan your garden →

Plant with:

Avoid planting near:

Plants requiring frequent watering (hydrangeas, ferns) Moisture-loving plants (sedges, moisture-seeking perennials) Plants sensitive to drought and full sun stress

Common Pests

  • Inspect regularly; remove by hand or spray with horticultural oil; use insecticidal soap for heavy infestations; improve air circulation

  • Increase humidity and water spray; use miticide if severe; encourage natural predators; avoid over-fertilizing

  • Spray with insecticidal soap or neem oil; encourage natural parasitic wasps; remove heavily infested leaves

  • Prevent through excellent drainage and avoiding overwatering; use well-draining potting mix; ensure soil dries between waterings; remove affected plants if severely infected

Uses

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Ornamental hedging and screening

Household

Westringia 'Long Leaved' makes an excellent low-maintenance hedge or privacy screen, especially in Mediterranean and coastal gardens. Its fine-textured foliage and graceful form provide year-round visual interest and can withstand coastal winds and salt spray. [source]

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Cut flowers and foliage arrangements

Craft

The long, elegant stems with narrow leaves and delicate flowers are prized for fresh and dried floral arrangements, adding texture and height to bouquets and display arrangements. [source]

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Pollinator support

Wildlife

The tubular flowers attract bees, butterflies, and other beneficial pollinators, making it valuable for supporting local pollinator populations and garden biodiversity. [source]

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Drought-tolerant landscaping

Household

Ideal for water-wise gardens, xeriscaping, and regions with water restrictions. Once established, it requires minimal supplemental water and thrives in hot, dry conditions. [source]

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Coastal and salt-tolerant gardens

Household

Westringia 'Long Leaved' tolerates coastal salt spray, making it an excellent choice for beachside properties and gardens exposed to salt-laden winds. [source]

Harvest Tips

Westringia 'Long Leaved' is primarily ornamental and not harvested for food or medicine. Cut sprigs of foliage for fresh floral arrangements or dried arrangements; cut in morning after dew dries. Pruning for shape can be done after flowering; stems root readily in water or moist sand for propagation.

Fun Facts

  • 🌱 Westringia is native to Australia and New Zealand, where it has been used traditionally by Indigenous peoples; the genus name honors the naturalist Johann Westin.
  • 🌱 Unlike many Mediterranean shrubs, Westringia actually prefers coastal conditions and can thrive where salt spray would damage other plants.
  • 🌱 'Long Leaved' cultivar is a selected form of the species Westringia fruticosa, chosen specifically for its distinctive elongated foliage, which gives it a more delicate appearance than the typical rounded-leaf form.

Gardening Terms

New to gardening? Learn about terms used in this guide:

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