Nasturtium
Tropaeolum majus
An ornamental plant, sown March to July.
In September: deadhead the nasturtium and pick the crop. Wear gloves: it can cause a skin allergy.
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Nasturtium, month by month
Bar: the usual months. Sprout: this month.
| Sowing, planting or job | Sep | Oct | Nov | Dec | 2027Jan | Feb | Mar | Apr | May | Jun | Jul | Aug |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sow under cover. | none | none | none | none | none | none | usual | usual | usual | none | none | none |
| Sow outdoors. | none | none | none | none | none | none | usual | usual | usual | usual | usual | none |
| Plant out. | none | none | none | none | none | none | none | none | usual | usual | usual | none |
| Deadhead the nasturtium. | usual | none | none | none | none | none | none | none | none | usual | usual | usual |
| Pick the nasturtiums. | usual | none | none | none | none | none | none | none | none | usual | usual | usual |
What to do, and when
The usual months for a UK garden. Your own plan gives the week.
Handle it with care
Wear gloves: it can cause a skin allergy.
Strong source: RHS.
Sowing and planting
Sow under cover March to May, 1.5cm deep. Moderate sources: Garden Organic, Gardeners’ World, Suttons, Sarah Raven and Mr Fothergill’s.
Sow outdoors March to July, 1.5cm deep, 20cm apart. Moderate sources: Garden Organic, Gardeners’ World, Suttons and Sarah Raven.
Plant out May to July, 20cm apart. Moderate sources: Garden Organic, Gardeners’ World, Suttons and Mr Fothergill’s.
Deadhead the nasturtium
Usually June to September. Moderate source: Garden Organic.
Pick the nasturtiums
Usually June to September. Moderate source: Garden Organic.
What the source words mean
Strong: the RHS page for this plant is among them.Moderate: another trusted UK source, or the RHS on its group.
What not to do
Don’t feed it
Fertiliser gives nasturtiums leaves and no flowers.
Moderate source: Garden Organic.
Every line above names the page it comes from. Where we found no good source for a job, we left it out. Where the name “Nasturtium” comes from.