True Blue Butterfly Bush

True Blue Butterfly Bush (Buddleia x 'Bostulu')

True Blue Butterfly Bush (Buddleia x 'Bostulu') is a compact, heavy-blooming cultivar prized for its true sky-blue flowers�an uncommon color among butterfly bushes. Bred for dense growth, manageable size, and continuous summer performance, this selection offers a refined option for smaller landscapes, containers, and pollinator gardens. With its vivid blue blooms and silvery foliage, it delivers both color and contrast all season long.

Distinctive Features

Reaching 2.5 to 3 feet tall and wide, True Blue maintains a tight, rounded habit that fits neatly into foundation beds and mixed borders. The flower panicles are richly colored, with cool blue tones rarely seen in Buddleia cultivars. Blooming from midsummer through fall, it provides consistent nectar for butterflies and hummingbirds. The foliage is narrow and silvery-green, adding texture and contrast even when not in bloom.

Growing Conditions

• Sun Exposure: Full sun ensures compact form and maximum flower production.
• Soil: Thrives in well-drained soil; tolerates sandy, average, or slightly dry conditions.
• Water: Low to moderate; water deeply but allow the soil to dry between irrigations.
• Humidity: Performs well with good airflow; suitable for humid or dry climates.
• USDA Hardiness Zones: 5�9; reliably hardy and adaptable in many U.S. regions.

Ideal Uses

• Focal Point Plantings: Uncommon blue flowers make a vibrant seasonal statement.
• Pollinator Gardens: Highly attractive to butterflies, hummingbirds, and bees.
• Small-Space Gardens: Compact size fits well in urban or patio settings.
• Container Plantings: Perfect for large pots on decks, porches, or balconies.
• Mixed Borders: Combines well with coneflowers, salvia, and ornamental grasses.

Low Maintenance Care

True Blue Butterfly Bush is low maintenance and self-sufficient once established. It responds well to annual pruning and will rebloom continuously without deadheading, though removal of spent flowers can enhance appearance.

• Watering: Provide regular water during establishment; drought tolerant once mature.
• Pruning: Prune back in early spring to encourage fresh growth and compact form.
• Fertilizing: Feed with a balanced fertilizer in spring to support long bloom cycles.
• Pest and Disease Resistance: Resistant to most common pests and diseases.
• Winter Care: Mulch in colder zones to protect roots from freeze-thaw fluctuations.

Why Choose True Blue Butterfly Bush?

True Blue Butterfly Bush (Buddleia x 'Bostulu') offers a rare flower color in a compact, garden-friendly form. Its versatility, pollinator value, and extended bloom time make it a smart pick for adding reliable blue hues to the summer garden.

• Rare Blue Blooms: Vivid sky-blue flowers provide a unique color accent.
• Compact and Contained: Grows neatly without overreaching into surrounding plants.
• Pollinator Favorite: Continuous nectar source from summer through fall.
• Easy to Grow: Tough and forgiving in a wide range of soils and climates.
• Perfect for Containers: Tidy habit makes it ideal for patios and balconies.

For unmatched blue color, compact size, and exceptional pollinator support, True Blue Butterfly Bush is a standout choice for sunny spaces large and small.