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Giant Purple Allium Giganteum Seeds for Planting

Giant Purple Allium Giganteum Seeds for Planting

$16.59 USD
$16.59 USD
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How to Sow and Plant

Sow seeds in well-draining soil in seed trays or pots, lightly covering with soil. Keep the medium consistently moist but not waterlogged. Place in a sunny or partially shaded area. Germination may take 2–4 weeks. Once seedlings have strong roots and leaves, transplant into garden beds or containers with full sun exposure and fertile, well-drained soil.

How to Grow

Grow in full sun with well-drained soil. Water moderately, reducing frequency once established. Fertilize in early spring with a balanced organic fertilizer to support tall stems and large blooms. Mulching helps retain moisture and prevent weed growth. Remove spent flowers to maintain appearance. Protect from heavy frost in very cold climates.

Tips

Ideal for sunny borders and rock gardens
Attracts pollinators such as bees and butterflies
Tall stems provide vertical interest
Requires well-drained soil
Minimal maintenance once established

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About
Product Information
Features
life-cycle

Life Cycle

Perennial

plant-characteristics

Plant Characteristics

Ornamental

growth-habit

Growth Habit

Clump-forming

Bloom Season

Late Spring

flavour-profile

Flavour Profile

Ornamental

suitable-for

Suitable for

Outdoor

About
Giant Purple Allium Giganteum Seeds for Planting
seed-type

Seed Type

Open Pollinated Seeds

plant-type

Plant Type

Perennial Flower

Giant Purple Allium Giganteum is a striking ornamental perennial onion valued for its dramatic spherical purple blooms on tall stems. Known for its vertical impact and exotic appeal, this plant enhances garden borders, rockeries, and container arrangements. Its non-GMO seeds produce long-lasting flowers that attract bees and butterflies, contributing to a pollinator-friendly garden. A must-have for gardeners seeking unique and show-stopping perennial flowers.

Planting information
planting-season

Planting Season

Winter

fruit-size

Fruit Size

N/A

plant-height

Plant Height

90–120 cm

light-requirement

Light Requirement

Full Sun

water-needs

Water Needs

Water Needs Moderate

hardiness-zones

Hardiness Zones

USDA Zones 4–8

container-garden

Container Garden

Yes

plant-spacing

Plant Spacing

30–45 cm

planting-depth

Planting Depth

1–2 cm

growing-conditions

Growing Conditions

Sunny

Coverage
Seed Count
Recommended Coverage
SEED COUNT
100
GTIN
036000100792

Frequently Asked Questions

Why are Allium flowers shaped like large spheres?

Each globe is made up of many small star-shaped flowers that bloom together.

Can Giant Allium be planted behind shorter flowers?

Yes. Its tall stems make it an excellent background or focal planting.

Do the seed heads remain decorative?

Yes. Dried flower heads often provide ornamental interest after blooming.

Does Giant Allium attract pollinators?

The nectar-rich blooms are commonly visited by bees and butterflies.

Can Allium tolerate windy gardens?

Sheltered locations help protect the tall flowering stems from strong winds.

Should flower stems be removed after blooming?

Spent stems can be removed after flowering to maintain a tidy garden appearance.