Westringia Fruticosa 'Wynyabbie Gem'
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Coastal Rosemary 'Wynyabbie Gem' / Native Rosemary 'Wynyabbie Gem'
Botanical Name: Westringia hybrid ‘Wynyabbie Gem’
Family: Lamiaceae
Origin: Australia
Plant Type: Evergreen shrub
Overview
‘Wynyabbie Gem’ is a proven Westringia for Adelaide and coastal SA—dense, dependable and beautifully floriferous. Fine grey-green foliage forms a naturally rounded shrub that bursts with soft lavender-mauve flowers for much of the year, all while shrugging off heat, wind and salt.
Key Features
- Mature Size: 1.2–1.8 m H × 1.2–1.6 m W (kept smaller with light clipping)
- Growth Rate: 30-50 cm per year under good conditions
- Foliage: Narrow, rosemary-like grey-green leaves; compact, tidy habit
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Flowers: Lavender-mauve to pale mauve-white, heaviest spring and autumn, with spot flowering most months
- Seasonal Interest: Evergreen structure with extended bloom periods
- Wildlife Value: Attracts native bees; dense branching offers shelter for small birds and beneficial insects
- Tolerance: Drought and heat tolerant once established; excellent salt & wind tolerance; light frost hardy; happy on sandy or limestone soils if well-drained
- Planting Density: Hedge: 1 plant per metre (0.7 m for very tight screens); Specimen/mass: 1.2–1.5 m apart; Groundcover edge: 2–3 plants per m² for a clipped, continuous look
- Pet Friendly: Generally non-toxic; discourage chewing of any ornamental plant
Where It Works Best
- Sunlight: Full sun to part shade (more sun = tighter form & heavier bloom)
- Soil: Well-drained loam, sandy loam or improved clay; avoid chronic waterlogging
- Water Needs: Establishment: 2 deep soaks/week for 8–12 weeks. Established: deep soak every 10–14 days in summer (more in heatwaves); monthly in winter if dry
- Maintenance: Tip-prune after flowering or light clip 2–4×/yr to keep hedges crisp and promote new flowers; mulch in spring; feed lightly in early spring (native-safe, low-P fertiliser if planting with natives)
- Lifespan: 15-25 years
- Climate Zones: Suited to temperate and Mediterranean SA gardens, including coastal areas
- Soil pH: Slightly acidic to alkaline; performs well on Adelaide limestone
Landscape & Design Ideas
- Polished hedges and borders along driveways and paths—holds straight lines with minimal trimming and brings long seasons of mauve colour
- Coastal & poolside planting: thrives in salt spray and wind; pair with lomandra, dianella, olives and blue/grey succulents for a modern Mediterranean/native palette
- Large pots and troughs flanking entries or framing outdoor rooms—clean form and extended flowering for year-round appeal
Why You Will Love It
‘Wynyabbie Gem’ delivers months of soft mauve bloom on a shrub that’s unfazed by Adelaide heat, wind and coastal conditions. It stays neat with just a couple of light clips each year, attracts pollinators, and provides premium, evergreen structure that instantly lifts curb appeal.