Conostylis candicans

Silver Cottonheads / Grey Conostylis

Botanical Name: Conostylis candicans
Family: Haemodoraceae
Origin: South-west Western Australia
Plant Type: Evergreen perennial clumping native grass-like plant

Overview

A tough, elegant silver-grey native perfectly suited to Adelaide and South Australian gardens, Conostylis candicans forms dense clumps of fine, arching foliage with a soft, woolly texture. In spring to early summer it produces upright stems topped with fluffy yellow flower heads, adding movement and seasonal interest. Highly drought-tolerant once established and ideal for low-water, coastal and native landscapes.

Key Features

• Mature Size: 0.4–0.8 m H × 0.4–0.8 m W
• Growth Rate: 15-30 cm per year under good conditions
• Foliage: Narrow, arching silver-grey leaves with soft hairs; evergreen and textural year-round
• Flowers: Bright yellow, woolly flower heads held above foliage in spring–early summer
  
• Fragrance: Not fragrant
• Seasonal Interest: Silver foliage year-round; flowering spikes add height and colour in warmer months
• Wildlife Value: Attracts native bees and beneficial insects when flowering
• Tolerance: Excellent drought tolerance once established; High wind and coastal salt tolerance; Light frost tolerant (down to approx. –5 °C); Sensitive to poor drainage and prolonged winter wet
• Planting Density: Mass planting: 2–4 plants per m²; Borders / feature clumps: space 50–80 cm apart
• Pet Friendly: Yes — non-toxic to pets and livestock

Where It Works Best

• Sunlight: Full sun to light part shade (best colour and flowering in full sun)
• Soil: Free-draining sandy or sandy-loam soils; raised beds recommended in heavier Adelaide clays
• Water Needs: Establishment: 2 deep soaks/week for 8–12 weeks. Established: occasional deep watering during extended dry periods; minimal winter water
• Maintenance: Remove spent flower stems after flowering; Minimal pruning required; Avoid heavy mulching against the crown; No fertiliser required; use low-phosphorus native fertiliser only if needed
• Lifespan: Perennial; often 5–10+ years in well-drained SA gardens/containers
• Climate Zones: Well suited to temperate and Mediterranean South Australia, including coastal areas and hot inland suburbs
• Soil pH: Neutral to slightly acidic preferred; tolerant of mildly alkaline soils

Landscape & Design Ideas

• Mass plant for a soft silver understorey in native or coastal gardens
• Excellent contrast with green natives like Lomandra, Dianella, Westringia
• Ideal for low-maintenance, water-wise designs
• Works beautifully in gravel gardens and modern native landscapes

Why You Will Love It

Conostylis candicans delivers refined silver texture with true native toughness. Perfect for Adelaide’s dry summers and coastal exposure, it offers year-round structure, seasonal flowers, and extremely low maintenance — all without the fuss of exotic silver foliage plants.