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Product Description
Bring graceful, cascading blooms to your garden with Empire Blue Buddleja Alternifolia, an heirloom variety known for its striking blue flowers and shade-tolerant nature. Naturally non-GMO and easy to grow, this plant thrives in borders, containers, and home landscapes. Its long-lasting blooms and elegant growth habit make it ideal for gardeners seeking low-maintenance, visually appealing plants that attract butterflies and enhance any garden setting.
Plant Type: Perennial flowering shrub
Flower Color: Blue
Growth Habit: Weeping, cascading form
Height: 36 – 72 inches
Bloom Season: Summer through fall
Uses: Borders, containers, shade gardens, butterfly-friendly gardens
Seed Quality: Heirloom, Non-GMO, high germination rate
Sowing Time: Sow seeds indoors 8–10 weeks before the last frost or directly outdoors after frost.
Soil Requirements: Well-draining, fertile soil enriched with organic matter.
Light Needs: Partial shade to full sun; tolerates some shade.
Sowing Depth: Sow seeds lightly on soil surface and press gently; do not cover deeply.
Spacing: 18 – 24 inches apart for healthy growth.
Watering: Keep soil evenly moist during germination; moderate watering once established.
Care Tips: Prune lightly after flowering to maintain shape; deadhead spent flowers to encourage continuous blooms.

Life Cycle
Deciduous perennial shrub
Planting Season
Early spring
Growth Habit
Arching spreading shrub
Flavor Profile
Non-edible ornamental
Plant Characteristics
Blue fragrant blooms
Use
Butterfly garden shrub
Growing Conditions
Well-drained garden soil
Harvest Advantages
Pollinator attraction
Plant Resistance
Shade tolerant
Scientific Name: Buddleja alternifolia
Seed Names
Empire Blue Butterfly Bush
Seed Type
Heirloom open-pollinated
Empire Blue Buddleja Alternifolia, commonly known as Empire Blue Butterfly Bush, is an elegant heirloom shrub prized for its cascading branches covered with fragrant blue flowers. This GMO-free, shade-tolerant plant thrives in sunny to partially shaded areas and attracts butterflies, bees, and beneficial pollinators. Ideal for borders, wildlife gardens, and landscape accents, it creates a beautiful seasonal floral display in home gardens.
Light Requirement
Full sun partial shade
Planting Depth
Surface press
Sowing Method
Indoor or direct
Plant Spacing
60–72 inches
Days to Maturity
120–150 days
Soil Preparation
Cold stratification
Hardiness Zones
5–9 USDA
Water Needs
Moderate watering
Planting Season
Spring fall sowing
Seed Count
Recommended Coverage
100
Up to 70 sq ft
500
Up to 350 sq ft
1000
Up to 700 sq ft