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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The giant round purple flower globes of this magnificent allium are the perfect way to introduce colour and structure to your garden between spring and summer, and when it comes to ornamental alliums, Allium 'Globemaster' truly is one of the best! The fact Allium 'Globemaster' won a prestigious RHS Award of Garden Merit means you can rely on it giving you a spectacular, colourful display without fuss. These towering alliums reach a height of nearly 1m and have good, strong stems to support the large ball-like blooms – they’ll also attract a frenzy of bees and butterflies.
Whether you have a modern and contemporary style or a cute cottage garden, Allium 'Globemaster' will fit right in and partner happily with virtually any other plant. Plant generous swathes of them running through borders or shrubberies and not only can you enjoy their wonderful bobbing flowers in the garden, but you can use them as cut flowers too.
The blooms of Allium 'Globemaster' make a bold statement in any indoor arrangement and have a great vase life too. They look really trendy in a tall glass vase, and equally as good in an informal mixed bunch.
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 'Globemaster'
- Flower colour
- Purple
- Bulb size
- 22/+
- Established height
- 70cm-1m
- 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
-20%
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Allium 'Globemaster' reviews
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choice to delivery
Our horticulturalists prepare every bulb and plant with the utmost care. From selection to packing, each one receives expert attention before beginning its journey to your garden.
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Every bulb and plant is sourced, selected and prepared with an expert eye for their quality and garden performance.
