Bicolor Butterfly Bush
Bicolor Butterfly Bush (Buddleia x weyeriana 'Bicolor')
Bicolor Butterfly Bush (Buddleia x weyeriana 'Bicolor') stands out in the landscape with its unique two-toned flowers and continuous summer bloom. Each flower spike combines lavender and gold tones for an eye-catching display that attracts butterflies, hummingbirds, and bees in abundance. A hybrid between Buddleia davidii and Buddleia globosa, this cultivar offers both the refined flower form of modern butterfly bushes and the bold color contrast rarely found in a single plant.
Distinctive Features
This deciduous shrub typically grows 5 to 6 feet tall and 4 to 5 feet wide, forming an arching, vase-shaped habit. The narrow, gray-green leaves provide a soft backdrop to the bold bicolor blooms, which begin in early summer and continue into fall. The fragrant flowers are borne on long panicles and appear in flushes, providing sustained interest. Unlike older cultivars, 'Bicolor' offers sterility in many climates, helping reduce unwanted seeding while still supporting pollinators.
Growing Conditions
- Sun Exposure: Full sun is essential for best flowering and plant vigor.
- Soil: Prefers well-drained, moderately fertile soil; tolerates poor soils once established.
- Water: Moderate; water deeply but infrequently once established to encourage drought tolerance.
- Humidity: Tolerates moderate humidity; provide airflow to reduce disease risk in humid areas.
- USDA Hardiness Zones: 5�9; may die back to the ground in colder zones and regrow each spring.
Ideal Uses
- Focal Point Plantings: Unique bicolor blooms create visual interest in sunny garden beds.
- Pollinator Gardens: Attracts butterflies, hummingbirds, and bees with long-blooming flower spikes.
- Mixed Shrub Borders: Pairs well with ornamental grasses, coneflowers, and other sun-loving perennials.
- Cut Flower Gardens: Makes excellent cut flowers with fragrant blooms and long-lasting stems.
- Urban and Drought-Tolerant Landscapes: Ideal for xeriscaping and low-maintenance designs.
Low Maintenance Care
Bicolor Butterfly Bush is a resilient and low-maintenance shrub when provided with full sun and good drainage. Pruning encourages vigorous new growth and prolongs the bloom season.
- Watering: Water weekly during establishment, then reduce to occasional deep watering during dry periods.
- Pruning: Prune hard in late winter or early spring to 12�18 inches to promote strong flowering stems.
- Fertilizing: Apply a balanced slow-release fertilizer in early spring; avoid overfertilizing.
- Pest and Disease Resistance: Generally pest-free; ensure airflow to avoid powdery mildew in humid regions.
- Winter Care: Mulch in colder climates to protect roots; may regrow from base in spring after dieback.
Why Choose Bicolor Butterfly Bush?
Bicolor Butterfly Bush (Buddleia x weyeriana 'Bicolor') brings unmatched flower color and reliable performance to sunny gardens. Its long bloom season, wildlife appeal, and tolerance for heat and drought make it a dynamic addition to pollinator-focused and ornamental plantings.
- Two-Toned Blooms: Striking lavender and gold flower spikes for standout color.
- Long Bloom Period: Continuous flowering from summer through early fall.
- Pollinator Favorite: Supports butterflies, hummingbirds, and bees throughout the season.
- Low Maintenance: Easy to care for with minimal watering and pruning.
- Heat and Drought Tolerant: Thrives in full sun with well-drained soil, even in challenging conditions.
For gardeners seeking bold color, pollinator support, and low-maintenance beauty, Bicolor Butterfly Bush delivers a unique and lasting impact from midsummer through fall.

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