Plant allium bulbs from September to December. If needed, keep them in their open packets somewhere cool, dry and well ventilated until planting.
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Gaze across a field that holds Allium 'Gladiator' – you’ll notice it instantly. Its giant heads spread over 20 cm in diameter and contain countless miniature florets, each a rich pink- or rose-purple. This stunning onion is a cross between two other alliums, but it will never make you cross. When you have rows of Alliums 'Gladiator' in your garden, they make it look ordered and precise. It’s the flower for the perfectionist in you. And there’s something entrancing about its heads – the closer you look, the more attractive they become. Be careful not to get dizzy and fall into them!
Quantity
Plant profile
Plant calendar
Choose full sun or partial shade. Improve heavy soil with organic matter and horticultural grit. For containers, use peat-free multipurpose compost with good drainage.
Plant bulbs pointed side upwards, two to three times their own height deep. A slightly flattened side is perfectly normal and nothing to worry about.
Space small bulbs around 5cm apart. Larger bulbs need more room, generally around twice their own width apart, so their foliage and flowers can develop freely.
Water after planting if the soil is dry, then only when needed. After flowering, allow the foliage to die back naturally. Decorative seedheads can remain in place.
- Botanical name
- Allium 'Gladiator'
- Flower colour
- Purple
- Bulb size
- 18/+
- Established height
- 1-1.2m
- Established spread
- 30-50cm
- Growing skill
- Easy to grow
- Habit
- Upright
- Hardiness
- Fully hardy
- Leaf colour
- Green
- Mouse resistant
- Yes
- Plant spacing
- 25 bulbs per m2
- Pollinator friendly
- Yes
- Position
- Sheltered
- Rabbit resistant
- Yes
- RHS Award (AGM)
- Yes
- Scented
- No
- Soil acidity
- Any
- Soil moisture
- Free draining
- Soil type
-
Loam
Sandy
Clay
Stony
Multipurpose compost - Suitable for
-
Large containers
Borders
Gravel gardens
Wildlife gardens
Cottage gardens
Low maintenance gardens
Cut flower gardens - Sunlight
- Full sun
- Toxicity
- Skin/eyes irritant
- Years to establish
- 1st year
Good for cutting
Pollinator-friendly
Thrives in full sun
RHS Recommended
Perennial
Fully hardy
Packed in paper
Low maintenance
Attracts wildlife
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Allium 'Gladiator' reviews
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