HarvestNest Seeds
100 Giant Onion Seeds – Allium giganteum
100 Giant Onion Seeds – Allium giganteum
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Trusted by home gardeners across the USA 🌿
Massive Purple Globe Flowers | Dramatic Ornamental Garden Favorite
Create a stunning focal point in your garden with Giant Ornamental Onion (Allium giganteum), famous for its enormous globe-shaped purple flower heads that rise high above the landscape on tall elegant stems.
These striking ornamental flowers add bold architectural beauty to flower beds, borders, and pollinator gardens while attracting bees and butterflies throughout the blooming season.
A favorite among gardeners and landscape designers, Giant Alliums create a dramatic, modern, and whimsical garden look.
Why Gardeners Love Giant Alliums
- Huge globe-shaped purple blooms
- Attracts bees & pollinators
- Tall dramatic flower stems
- Deer & rabbit resistant
- Easy to grow and low maintenance
- Excellent for cut & dried flower arrangements
What You Get
- Approx. 100 Giant Onion (Allium giganteum) Seeds
- Fresh viable seeds ready for planting
Plant Details
- Botanical Name: Allium giganteum
- Common Name: Giant Ornamental Onion
- Plant Type: Perennial flowering bulb plant
- Mature Height: 3–5 feet
- Bloom Color: Purple-violet
- Flower Size: Up to 6–8 inch globes
- Sunlight: Full Sun
- Soil: Well-drained soil
- Bloom Season: Late Spring to Early Summer
- Hardiness Zones: 4–9
How to Grow
- Start seeds indoors or direct sow outdoors in cool weather
- Plant seeds 1/4 inch deep in moist well-drained soil
- Keep soil lightly moist during germination
- Germination may take 2–6 weeks
- Provide full sun for best flowering
💡 Tip: Giant Alliums look best planted in clusters for dramatic visual impact.
Perfect For
- Cottage gardens
- Pollinator gardens
- Flower borders
- Modern landscapes
- Cut flower gardens
- Drought-tolerant landscaping
❓ Frequently Asked Questions (FAQ)
How large are the flowers?
Flower heads can grow up to 6–8 inches across.
Are Giant Alliums perennial?
Yes — they return year after year in suitable climates.
Do they attract pollinators?
Absolutely — bees and butterflies love the blooms.
Are they deer resistant?
Yes — ornamental onions are naturally deer and rabbit resistant.
