True Blue Butterfly Bush

True Blue Butterfly Bush (Buddleia x 'Bostulu')

True Blue Butterfly Bush (Buddleia x 'Bostulu') is a compact, heavy-blooming shrub valued for its rare sky-blue flowers, an uncommon color among butterfly bushes. Bred for dense growth, manageable size, and reliable summer performance, this selection adds both vivid color and silvery foliage contrast to sunny landscapes, containers, and pollinator gardens.

Distinctive Features

Reaching 2.5 to 3 feet tall and wide, True Blue forms a tidy, rounded habit that fits neatly into small beds or borders. Its panicles display a bright, cool blue rarely found in Buddleia cultivars, blooming steadily from midsummer through fall. The narrow, silvery-green leaves create a refined backdrop, adding texture even when flowers are not present. Its long-lasting bloom cycle makes it a magnet for butterflies and hummingbirds.

Growing Conditions

• Sun Exposure: Full sun is required for maximum flowering and compact growth.
• Soil: Prefers well-drained soil; adapts to sandy, average, or slightly dry conditions.
• Water: Low to moderate; water deeply during establishment, then allow soil to dry between waterings.
• Humidity: Performs well with good airflow; suitable for humid or dry climates.
• USDA Hardiness Zones: 5 to 9; hardy and adaptable across many regions.

Ideal Uses

• Focal Point Plantings: Rare blue flowers provide a striking summer highlight.
• Pollinator Gardens: Nectar-rich blooms attract butterflies, hummingbirds, and bees.
• Small-Space Gardens: Compact form fits well in townhomes and patios.
• Container Plantings: Works beautifully in large pots on porches, decks, or balconies.
• Mixed Borders: Combines seamlessly with perennials like salvia, coneflowers, and ornamental grasses.

Low Maintenance Care

True Blue is low-maintenance and rewarding with little effort. It reblooms without deadheading, though removing spent flowers can improve its appearance. Annual pruning encourages compact form and fresh growth each season.

• Watering: Keep evenly moist during the first year; drought tolerant once established.
• Pruning: Cut back in early spring to maintain shape and encourage new blooms.
• Fertilizing: Apply a balanced fertilizer in spring to support growth and extended flowering.
• Pest and Disease Resistance: Resistant to common pests and garden diseases.
• Winter Care: Apply mulch in colder zones to insulate the root system.

Why Choose True Blue Butterfly Bush?

True Blue Butterfly Bush (Buddleia x 'Bostulu') combines rare flower color, tidy form, and continuous pollinator support into one easy-care package. Perfect for small spaces and containers, it delivers reliable performance and unique seasonal beauty.

• Rare Sky-Blue Blooms: A standout color not commonly found in butterfly bushes.
• Compact Growth: Rounded habit stays neat without overwhelming surrounding plants.
• Pollinator Magnet: Attracts butterflies, bees, and hummingbirds all season.
• Easy to Grow: Tolerant of heat, humidity, and average soils.
• Container Friendly: Ideal size for patio, deck, or balcony planters.

For vibrant blue blooms, compact size, and excellent pollinator appeal, True Blue Butterfly Bush is a dependable and distinctive choice for sunny gardens.