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FlowersHalf-HardyAnnual
Nasturtium
Nasturtium is a quick half-hardy annual grown for bright flowers, rounded leaves and a useful trailing or mounding habit. It is popular in ornamental and kitchen gardens alike, especially because both foliage and flowers are edible and pollinator friendly.
Basic information
Category
Flowers
Lifecycle
Annual
Hardiness
Half-Hardy
Planting partners
0 companions · 0 crops to avoid
Growth profile
Germination window
7–14 days
Germination temperature
15–20 °C
Plant spacing
30 cm
Row spacing
45 cm
Sowing depth
2 cm
Height
30 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
Sow nasturtiums directly once the ground has warmed, and avoid rich soil if you want flowers rather than masses of leaf. Water young plants until established, deadhead or cut flowers frequently, and allow some trailing forms to scramble where their habit can be enjoyed.
Common pests
Blackfly, caterpillars, slugs, flea beetles.
Companions
No companion crops have been added yet.
Don’t grow with
No crops to avoid have been added yet.