bulb corm tuber RHS Award
Allium gratisimum 'Mount Everest'
Mount Everest Onion
Not currently listed at our partner nurseries.
Expertly Curated
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Loved by Designers
Essentials
At a Glance
Plant Type
Bulb Corm Tuber
Height
40 inches
Width
12 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Central Asia
Toxicity
Toxic if ingested in large quantities
The Story
Plant Bio
Giant ornamental onion with tall, sturdy stems and large white spherical flower heads. Notable for its exceptional height and striking late spring display.
Uses & Benefits:
Allium gratisimum Mount Everest offers stunning vertical white flower clusters that add architectural interest and elegance to garden borders.
Its bulbs are hardy and low-maintenance, providing reliable spring color with minimal effort.
Attracts pollinators like bees and butterflies, supporting local ecosystems.
Marketplace
Where to Buy
We couldn't find this plant listed online right now.
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck bulbs 4–6 inches deep in well-drained soil in fall.
- Water thoroughly after planting to settle soil around bulbs.
- Mist cuttings in spring for propagation, keeping soil moist.
- Fertilize with balanced bulb fertilizer in early spring.
- Remove spent flower heads to promote bulb health.
- Mulch lightly to conserve moisture and suppress weeds.
Pro Tip
Plant in well-drained soil with full sun for best flowering results.
Keep It Thriving
Care Guide
Do
- Water during dry spells 🌱
- Mulch to retain soil moisture
- Fertilize annually in early spring
- Remove dead foliage after flowering
Don't
- Avoid overwatering to prevent bulb rot ❌
- Don’t disturb bulbs once established
- Refrain from fertilizing late in the season
- Avoid planting in heavy clay soil without amendment
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Striking vertical accent in perennial bordersVanilla-scented flower bed edgeEdgy plant in rock gardens
Companion Plants
Tulips Daffodils Allium giganteum Sedum Lavender
Multiply
Propagation Methods
Good to Know