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FlowersHardyPerennial (long-lived)
Ornamental Allium
Ornamental allium is a hardy bulb grown for round heads of starry flowers on straight stems in late spring and early summer. It brings strong architectural shape to borders and combines especially well with grasses and early summer perennials.
Basic information
Category
Flowers
Lifecycle
Perennial (long-lived)
Hardiness
Hardy
Planting partners
0 companions · 0 crops to avoid
Growth profile
Plant spacing
30 cm
Row spacing
30 cm
Sowing depth
10 cm
Height
90 cm
Spread
30 cm
Calendar
JJan
FFeb
MMar
AApr
MMay
JJun
JJul
AAug
SSep
OOct
NNov
DDec
Sow Indoors
Sow Outdoors
Plant Out
Flowering / Harvest
Timings based on average frost dates in the UK. Sign up to set your frost dates.
Care tips
Plant ornamental allium bulbs in autumn in full sun and well-drained soil, and avoid heavy wet positions where bulbs may rot over winter. Leave seedheads for structure if you like, and allow foliage to ripen naturally even if it looks untidy before flowering ends.
Common pests
Allium leaf miner, downy mildew, bulb rot in badly drained soil.
Companions
No companion crops have been added yet.
Don’t grow with
No crops to avoid have been added yet.