Cuphea hyssopifolia 'Violet'

Mexican Heather / False Heather

Botanical Name: Cuphea hyssopifolia ‘Violet’
Family: Lythraceae
Origin: Mexico & Central America
Plant Type: Evergreen compact flowering shrub

Overview

Cuphea hyssopifolia ‘Violet’ is a fine-textured, evergreen shrub valued for its continuous display of small violet-purple flowers over much of the year. Well suited to Adelaide and South Australian gardens, it performs best in warm, sheltered positions where it delivers reliable colour from spring through autumn, and often into winter in mild years.

Naturally neat and low-growing, ‘Violet’ Cuphea is ideal for borders, edging, containers and alfresco areas. Its soft foliage, long flowering season and tidy form make it a popular choice for low-maintenance colour in both formal and informal garden designs.

Key Features

• Mature Size: 0.5–0.8 m H × 0.6–1.0 m W
• Growth Rate: Moderate; approx. 20–30 cm per year in warm conditions
• Foliage: Fine, narrow mid-green leaves; evergreen; soft, compact habit
• Flowers: Abundant small violet-purple blooms held along stems; spring–autumn (often year-round in mild winters)
  
• Fragrance: Not fragrant
• Seasonal Interest: Evergreen foliage with extended flowering season
• Wildlife Value: Attracts bees and other pollinators
• Tolerance: Moderate drought tolerance once established; Good heat tolerance with some summer water; Light frost tolerant (may be damaged below 0 °C but regrows in spring); Best in sheltered positions; not suited to exposed coastal salt spray
• Planting Density: Mass planting: 3–4 plants per m²; Borders/edging: space 40–60 cm apart
• Pet Friendly: Generally considered non-toxic to pets

Where It Works Best

• Sunlight: Full sun to light part shade (best flowering in full sun)
• Soil: Well-drained loam or sandy loam enriched with organic matter; avoid heavy, waterlogged clay
• Water Needs: Establishment: 2 deep soaks/week for 6–8 weeks; Established: deep soak every 2–3 weeks in summer; minimal water in winter
• Maintenance: Low maintenance; Light trim after flowering flushes to maintain shape and encourage new blooms; Mulch annually to retain moisture
• Lifespan: Typically 5–10 years in SA gardens; longer in protected, well-maintained sites
• Climate Zones: Best suited to temperate and Mediterranean South Australia, particularly Adelaide Plains and sheltered foothills
• Soil pH: Slightly acidic to neutral preferred; tolerates mildly alkaline soils with organic matter

Landscape & Design Ideas

• Low flowering border or edging plant
• Feature colour in pots and containers
• Alfresco and patio planting in sheltered positions
• Formal or cottage-style gardens
• Pairs well with Buxus, Gardenia, Liriope, Lavender, Westringia

Why You Will Love It

Cuphea hyssopifolia ‘Violet’ offers months of colour with minimal effort. Compact, tidy and endlessly floriferous, it’s perfect for Adelaide gardeners wanting a soft, refined look that performs reliably through the warmer months.