Buddleia Weyeriana 'Bicolor'

Bicolor Butterflybush, Golden Butterflybush

Buddleja × weyeriana ‘Bicolor’ — commonly known as Bicolor Butterfly Bush — is a distinctive deciduous shrub celebrated for its two-toned flowers: soft lavender-purple petals surrounding a bright golden-yellow eye. Blooming from mid-summer through fall, it offers a lighter, more nuanced color palette than many deep-purple Buddleja while remaining highly attractive to pollinators.

Key features
Width / spread: 6–8 ft (arching habit may appear slightly wider at maturity)
Height: 8–10 ft (can be maintained at 6–8 ft with annual pruning)
Flower color: Lavender-purple with golden-yellow eye
Bloom time: Mid-summer through fall
Foliage: Gray-green, lance-shaped leaves
Form: Upright, arching shrub
Life cycle: Deciduous shrub

Growing conditions
Sun: Full sun (required for best flowering and color contrast)
Soil: Well-drained; average to lean soils preferred
Water: Low to moderate; drought tolerant once established
Hardiness:



Zone Low: 5b



Zone High: 9a



Landscape use
Specimen shrub
Back of shrub borders and perennial gardens
Butterfly and pollinator gardens
Informal hedges and screens
Large landscape plantings

Notes


Distinct two-color effect sets it apart from solid-color Buddleja



Blooms on new wood — prune hard in early spring to control size and maximize flowering



Strong fragrance; highly attractive to butterflies, bees, and hummingbirds



Fertile cultivar — may self-seed; restricted or discouraged in some regions

Plant type

Deciduous Shrub

Height

6'-8'

Width

5'-7'

Hardiness zones

5–9

Sunlight

Full Sun

Growth rate

Fast

Bloom time

Early Fall, Late Summer, Summer

Flower color

Red, Yellow

Leaf color

Dark Green

Fall color

Light Green, Yellow Green

Attracts

Bees, Butterflies

Soil

Clay, Loamy

Landscape use

Specimen

Shape

Mounded

Fragrant

Yes

Deer resistant

Yes

Drought tolerant

No