Westringia fruticosa

gorkemekinci4423
Nov 10
2 min read

1. Brief Description

Westringia fruticosa, commonly known as coastal rosemary or native rosemary, is an evergreen shrub native to the coastal regions of Australia. Its narrow, grey-green leaves are densely arranged, and its flowers range from white to pale violet, blooming at multiple times throughout the year.

This species is widely used in landscaping due to its high tolerance to harsh conditions, including coastal winds, salty air, and loose or sandy soils.

2. Botanical Information

Taxonomy: Family Lamiaceae (mint family); Genus Westringia; Species fruticosa
Scientific name: Westringia fruticosa (Willd.) Druce
Common names: Coastal Rosemary, Native Rosemary
Native range: Eastern coastal regions of Australia, naturally occurring along the New South Wales coastline
Morphology: Simple, narrow leaves (≈2 cm long), typically arranged in whorls of 3–5 along stems
Flowers: White to pale violet, sometimes marked with orange or purple speckles in the throat
Size: Depending on growing conditions, typically 1–3 m in height with a similar spread

3. Growing Conditions

Light: Performs well in full sun to partial shade
Soil: Tolerates a wide range of soils including sandy, loamy, and heavier types; prefers well-drained soils and slightly dry conditions
Water: Highly drought-tolerant. Established plants require minimal irrigation; avoid consistently wet or waterlogged soils
Climate & Tolerance: Tolerant of coastal winds, salt spray, and light frost; prolonged severe frost should be avoided
pH & Drainage: Can grow in acidic, neutral, or alkaline soils

4. Care Guidelines

Pruning: Can become dense; light pruning after flowering maintains form and encourages bushiness
Drainage: Adequate aeration around roots is essential; avoid heavy soils or areas with standing water
Watering: Regular watering during establishment; reduce frequency once plants are established
Frost & Wind Protection: Although coastal-tolerant, protection may be needed under extreme frost or strong winds
Aging & Renewal: Older plants may thin in the center; rejuvenation can be achieved with new shoots
Pests & Diseases: Generally hardy; excessive moisture and shaded conditions may cause decay at the base

5. Landscape Use

Coastal Gardens: Ideal for seaside landscapes due to tolerance of salt, wind, and sandy soils
Hedges & Borders: Dense branching makes it suitable for low- to medium-height protective hedges or boundary lines
Erosion Control & Slopes: Spreading habit and dense foliage make it effective for stabilizing slopes and retaining soil
Low-Maintenance / Xeriscape Gardens: Minimal water and maintenance requirements make it suitable for water-wise landscaping
Urban / Mixed-Use Areas: Easily adapts to parks, street edges, and urban gardens