Grevillea Lavandulacea
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Lavender Grevillea
Botanical Name: Grevillea lavandulacea
Family: Proteaceae
Origin: Australia (SA & VIC)
Plant Type: Evergreen shrub
Overview
Grevillea lavandulacea is a compact, water-wise native for South Australian gardens. It forms a neat mound of fine, grey- to mid-green foliage and produces masses of nectar-rich red to deep-pink “spider/toothbrush” flowers through the cooler months. Ideal for low-maintenance borders, native hedging, banks/rockeries and second-line coastal sites (use low-phosphorus native fertiliser).
Key Features
- Mature Size: 0.4–1.2 m H × 0.8–2 m W
- Growth Rate: 20-40 cm per year under good conditions
- Foliage: Fine, evergreen grey-/mid-green leaves; dense, compact habit
- Flowers: Nectar-rich clusters in red to deep pink; long display
- Seasonal Interest: Late autumn–spring peak, with spot flowers at other times in mild sites
- Wildlife Value: Attracts honeyeaters & native bees; dense cover shelters small fauna
- Tolerance: Drought-tolerant (once established), heat-tolerant, wind-tolerant, second-line coastal-tolerant; light frost (protect from hard frost); clay-tolerant with drainage
- Planting Density: Shrub borders/hedges: 1 plant per metre (dense) or 1 per 1.5 m for a looser effect
- Pet Friendly: Generally non-toxic; sap/leaves may irritate sensitive skin—discourage chewing
Where It Works Best
- Sunlight: Full sun to light part shade (best flowering in full sun)
- Soil: Well-drained sandy or loam soils; improved clay only with excellent drainage; avoid waterlogging; low phosphorus
- Water Needs: Establishment: 2 deep soaks/week for 8–12 weeks. Established: deep soak every 10–14 days in summer; monthly in winter if dry
- Maintenance: Mulch in spring; tip-prune after flowering to keep compact (avoid cutting into old bare wood); feed lightly with native (low-P) fertiliser in early spring
- Lifespan: 10–20+ years
- Climate Zones: Suited to temperate and Mediterranean SA gardens, including coastal areas
- Soil pH: Slightly acidic to neutral; tolerates mildly alkaline limestone soils if free-draining
Landscape & Design Ideas
- Mass plant for a cohesive, bird-friendly, low-care display
- Use as a low hedge or to soften rockeries/banks and retainers
- Pair with Lomandra, Dianella, Westringia and other water-wise natives
Why You Will Love It
A set-and-forget native that shrugs off heat and wind, delivers months of red-pink colour, draws in birds and bees, and stays tidy with a quick trim — perfect for SA gardens needing beauty, resilience and low water use.