Nepeta faassenii 'Walkers Blue'

Catmint / Walker’s Blue Nepeta

Botanical Name: Nepeta × faassenii ‘Walker’s Blue’
Family: Lamiaceae
Origin: Garden hybrid (European species ancestry)
Plant Type: Evergreen to semi-evergreen perennial

Overview

A classic, drought-tough perennial perfectly suited to Adelaide’s Mediterranean climate, Nepeta ‘Walker’s Blue’ forms a relaxed, billowing mound of aromatic grey-green foliage topped with clouds of soft lavender-blue flowers for months on end. Flowering begins in spring and continues through summer into early autumn with regular trimming, making it one of the longest-performing perennials for South Australian gardens.

Highly tolerant of heat, wind and dry soils once established, it thrives in sunny borders, gravel gardens, cottage plantings and modern Mediterranean landscapes. Its informal habit softens hard edges, while the cool blue tones provide contrast alongside warmer colours and silver foliage plants. Exceptionally attractive to bees and butterflies, it’s as functional as it is beautiful.

Key Features

• Mature Size: 0.4–0.6 m H × 0.6–0.9 m W (soft, spreading mound)
• Growth Rate: 20–40 cm per year under good conditions
• Foliage: Aromatic grey-green leaves with a soft, slightly fuzzy texture; foliage may develop silvery tones in heat or dry conditions
• Flowers: Lavender-blue flower spikes from spring through summer, often repeating into autumn with trimming
  
• Fragrance: Foliage strongly aromatic when brushed; flowers lightly scented
• Seasonal Interest: Long flowering season from spring to autumn; attractive foliage year-round in mild winters
• Wildlife Value: Excellent nectar source for bees, butterflies and other pollinators
• Tolerance: Drought-tolerant once established; excellent heat and wind tolerance; coastal-tolerant (second-line); frost hardy; dislikes waterlogged soils
• Planting Density: Mass planting: 3–5 plants per m²; borders: 50–60 cm spacing
• Pet Friendly: Non-toxic to cats and dogs

Where It Works Best

• Sunlight: Full sun for best flowering and compact growth; tolerates light part shade with reduced bloom
• Soil: Free-draining sandy or loamy soils; tolerates slightly alkaline and limestone soils common across Adelaide
• Water Needs: Establishment: 2 deep soaks/week for 8–12 weeks. Established: deep soak every 10–14 days in summer; minimal watering in winter
• Maintenance: Very low — shear back after main flowering flush to encourage fresh growth and repeat blooms; cut back hard in late winter; avoid rich fertilisers
• Lifespan: 5–10+ years in well-drained soils
• Climate Zones: Ideal for Mediterranean and temperate South Australia — Adelaide plains, Barossa, Fleurieu Peninsula, Yorke Peninsula and coastal suburbs
• Soil pH: Neutral to alkaline; tolerates slightly acidic soils if well drained

Landscape & Design Ideas

• Cottage gardens paired with roses, salvias and gaura
• Mediterranean and waterwise gardens with lavender, rosemary and santolina
• Gravel gardens and dry borders where irrigation is limited
• Soft edging plant along paths and driveways
• Pollinator gardens to support bees and beneficial insects

Why You Will Love It

‘Walker’s Blue’ is one of those rare plants that truly earns its place — flowering for months, thriving in Adelaide’s heat and dryness, and asking for very little in return. With its soft colour, aromatic foliage and exceptional pollinator appeal, it’s a reliable, easy-care perennial that brings movement, calm and seasonal colour to South Australian gardens.