How to Grow Westringia rosemary
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Westringia rosemary
Westringia fruticosa
shrubWestringia fruticosa is an evergreen ornamental shrub native to Australia, valued for its fine-textured foliage and delicate lavender to white flowers. It resembles rosemary in appearance but is a distinct species, offering a more refined look with needle-like leaves and abundant blooms throughout the year in warm climates. This hardy, drought-tolerant shrub is excellent for hedging, borders, and coastal gardens.
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Example Westringia rosemary timeline · Pittsburgh, PA (Zone 6b)
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Plant Westringia rosemary
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Westringia rosemary
Around Aug 15≈ 120 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in USDA zones 9-11; tolerates light frosts but prefers warmer climates
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Get my Westringia rosemary timeline →Growth Stages
Establishment
4-8 weeksYoung plant with minimal branching, establishing root system
Water regularly but allow soil to dry between waterings. Protect from extreme heat and cold. Avoid fertilizing immediately.
Vegetative Growth
2-3 monthsBushy growth with increasing foliage density and multiple branches developing
Light pruning to encourage branching and bushier form. Apply balanced fertilizer in spring. Maintain moderate water schedule.
Flowering
Throughout growing season, year-round in warm climatesAbundant small lavender, pink, or white tubular flowers appear along stems
Deadhead spent flowers to encourage continuous blooming. Provide consistent but not excessive water. Support flowering with light fertilization.
Maturity
Ongoing, 1+ yearsFully developed ornamental shrub with dense foliage and prolific flowering
Prune annually to maintain shape and size. Reduce watering in winter months. Minimal fertilization needed.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Improve drainage, avoid overwatering, ensure air circulation, remove affected plants if severe
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Spray with water to dislodge, use neem oil or insecticidal soap if infestation is heavy
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Prune affected branches, spray with horticultural oil in early spring
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Use yellow sticky traps, spray with insecticidal soap or neem oil
Uses
Ornamental landscaping
HouseholdWestringia fruticosa is widely used as an ornamental hedge, border plant, and accent shrub in drought-tolerant and Mediterranean-style gardens. Its fine foliage and prolific blooms provide year-round visual interest. [source]
Cut flowers and arrangements
CraftThe delicate flowering stems are attractive in fresh flower arrangements and vase displays, lasting well in water once properly conditioned. [source]
Pollinator support
WildlifeAbundant nectar-rich flowers attract bees, butterflies, and other pollinators, making it valuable for wildlife gardens and pollinator conservation. [source]
Coastal and xeriscaping gardens
HouseholdHighly tolerant of salt spray, sandy soils, and drought conditions, Westringia fruticosa is ideal for coastal landscapes and water-wise garden designs. [source]
Topiary and formal hedging
HouseholdFine-textured foliage responds well to pruning and shaping, making it suitable for formal hedges, topiary designs, and structured garden layouts. [source]
Harvest Tips
This is an ornamental shrub, not harvested for food. Prune stems for fresh arrangements or cuttings in spring or early summer. Cut above leaf nodes to encourage bushier growth.
Fun Facts
- 🌱 Westringia fruticosa is native to southeastern Australia and is sometimes called 'Australian rosemary,' though it is botanically distinct from true rosemary (Rosmarinus officinalis).
- 🌱 This shrub can bloom profusely throughout the year in frost-free climates, with some cultivars producing flowers almost continuously under ideal conditions.
- 🌱 The genus Westringia contains about 30 species, most native to Australia, and Westringia fruticosa is the most widely cultivated outside its native range due to its ornamental qualities and hardiness.
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