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Buddleia Black Knight Butterfly Bush Flower Seeds for Garden Planting

Buddleia Black Knight Butterfly Bush Flower Seeds for Garden Planting

$16.49 USD
$16.49 USD
Sale Sold out

How to Sow and Plant

Sow seeds on the surface of well prepared soil and gently press them in without covering deeply. Keep soil evenly moist during germination and place in a warm bright location.

How to Grow

Grow buddleia in full sun with well drained soil. Water moderately and avoid waterlogging. Prune back in early season to encourage strong growth and abundant flowering.

Tips

Plant in open sunny areas
Prune for bushy growth
Attracts butterflies

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About
Product Information
Features
life-cycle

Life Cycle

Perennial

plant-characteristics

Plant Characteristics

Purple spikes

growth-habit

Growth Habit

Shrubby

bloom-season

Bloom Season

Summer autumn

flavour-profile

Flavour Profile

Not edible

suitable-for

Suitable for

Outdoor

About
Buddleia Black Knight Butterfly Bush Flower Seeds for Garden Planting
seed-type

Seed Type

Open Pollinated

plant-type

Plant Type

Flowering Shrub

Buddleia Black Knight is an ornamental flowering shrub known for its dark purple blooms and ability to attract butterflies. It is widely planted in gardens and landscapes to create height fragrance and seasonal interest. The plant is hardy fast growing and easy to maintain with basic care.

Planting information
planting-season

Planting Season

Spring

fruit-size

Fruit Size

Not applicable

plant-height

Plant Height

200–300 cm

light-requirement

Light Requirement

Full Sun

water-needs

Water Needs

Moderate

hardiness-zones

Hardiness Zones

5–9

container-garden

Container Garden

Yes

plant-spacing

Plant Spacing

120–150 cm

planting-depth

Planting Depth

Surface sow

growing-conditions

Growing Conditions

Well drained soil

Coverage
Seed Count
Recommended Coverage
SEED COUNT
100
GTIN
036000177213

Frequently Asked Questions

What makes Black Knight different from white butterfly bushes?

It produces deep purple flower spikes that create dramatic contrast in perennial landscapes.

Can it be planted as a flowering screen?

Yes. Mature shrubs provide seasonal structure while softening fences and boundaries.

Which companion plants pair well with Black Knight?

Echinacea, lavender, ornamental grasses, and rudbeckia create attractive mixed borders.

Does it add height to garden beds?

Yes. Upright flowering stems create strong vertical interest in perennial landscapes.

Can pruning improve flowering performance?

Seasonal pruning helps maintain a balanced shape and encourages vigorous new growth.

Do butterflies visit the flower spikes?

The nectar-rich blooms may attract butterflies, bees, and other beneficial pollinating insects.