Allium stipitatum 'White Giant'![RHS Plants for pollinators](/assets/styles/images/icons/RHS_Bee_YELLOW-REGISTERED.png)
![RHS Plants for pollinators](/assets/styles/images/icons/RHS_Bee_YELLOW-REGISTERED.png)
allium 'White Giant'
A bulbous herbaceous perennial, 1.1-1.5m high, with green stems, green basal leaves which die back in summer, and dense umbels, 10-15cm across, of hundreds of starry white flowers in early summer
Size
Ultimate height
1–1.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
Stem | Flower | Foliage | Fruit | |
Spring | Green | |||
---|---|---|---|---|
Summer | Green | White | Green | |
Autumn | ||||
Winter |
Position
- Full sun
Aspect
South–facing or West–facing or East–facing
Exposure
ShelteredDrought resistance
Yes Hardiness
H5Botanical details
- Family
- Amaryllidaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Columnar upright
- Genus
Allium are bulbous herbaceous perennials with a strong onion or garlic scent, linear, strap-shaped or cylindrical basal leaves and star-shaped or bell-shaped flowers in an umbel on a leafless stem
- Name status
Accepted
How to grow
Cultivation
Plant bulbs in early autumn, 20cm apart and at a depth of about four times the diameter of the bulb, in well-drained soil in full sun; for more advice, see Allium cultivation
Propagation
Propagate by division, removing offsets, in autumn
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Patio and container plants
- Gravel garden
- Wildlife gardens
- Low Maintenance
- Cut flowers
- Flower borders and beds
Pruning
No pruning required
Pests
Generally pest-free, but may be susceptible to slugs, snails, allium leaf miner, and onion pests such as onion fly
Diseases
Generally disease-free, but may be affected by onion diseases such as onion white rot and onion downy mildew
Get involved
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