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VegetablesHardyAnnual
Spring Onion
Spring onion is a quick allium grown for bunching and fresh use before any real bulb forms. It is especially useful as a catch crop because it takes little space, grows fast and adds a fresh mild onion flavour to salads and everyday cooking.
Basic information
Category
Vegetables
Lifecycle
Annual
Hardiness
Hardy
Planting partners
2 companions · 8 crops to avoid
Growth profile
Days to harvest
60 days
Germination window
7–14 days
Germination temperature
10–24 °C
Plant spacing
5 cm
Row spacing
20 cm
Sowing depth
1.5 cm
Height
30 cm
Spread
5 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
Sow small short rows regularly rather than one large batch so you always have stems at the right stage. Water in dry weather to keep growth soft and even, and lift as soon as stems reach usable thickness before plants become coarse.
Common pests
Onion fly, thrips, rust, birds pulling seedlings.
