Agapanthus 'Double Blue Boy'Double Blue Boy Agapanthus

The Agapanthus 'Double Blue Boy', or Double Blue Boy Agapanthus, is a hardy evergreen perennial prized for its tall, striking flower stalks topped with clusters of vibrant blue double blooms. Flowering from late spring to early summer, this compact variety reaches up to 60 to 80 cm tall, making it ideal for borders, mass planting, or containers. Its strap-like green foliage adds a lush base, offering year-round greenery.

Low-maintenance and drought-tolerant, Double Blue Boy thrives in a variety of climates, adding bold colour and texture to gardens and landscapes.

Specifications

• Height60 to 80 cm
• Width40 to 60 cm
• Native toSouth Africa (cultivar origin)
• FoliageStrap-like green leaves; evergreen
• Growth rateModerate

Conditions

• SoilPrefers well-drained, fertile soils; tolerates sandy and loamy types
• LightFull sun to partial shade
• WaterLow to moderate; drought-tolerant once established
• ClimateThrives in temperate, subtropical, and coastal regions

Additional Features

• FlowersVibrant blue, double blooms on tall stalks; late spring to early summer
• FormCompact clumping habit with upright flower spikes
• UsesIdeal for borders, mass planting, feature planting, or containers
• SpacingPlant 40 to 60 cm apart for dense coverage or individual displays
• Low MaintenanceRequires minimal care; cut back spent flower stalks to encourage re-blooming
• Pest ResistanceGenerally pest-free and hardy
• Drought TolerancePerforms well in low-water gardens
• VersatilityComplements cottage, formal, and contemporary garden styles
• Wildlife AttractionFlowers attract bees and butterflies

The Double Blue Boy Agapanthus is a robust and versatile plant, perfect for adding striking vertical interest and vibrant colour to gardens and landscapes.