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Herb · Tropaeolaceae family

Garden nasturtium

Tropaeolum majus

Full sun to part shade 0.3–3 m × 0.3–0.9 m Flowers June–October Harvest June–August Low maintenance
Flower colours Click a colour

In short a 10-second read

SunFull sun to part shade
Size0.3–3 m
spacing 30 cm
FlowersJune–October
PruningJune–October
Care levelLow maintenance

Where to plant and how much to water

Sun, soil and water.

It grows best in full sun to part shade, in dry to average soil.

Sun

Sun6 hours or more
Part shade3–6 hours
Shadeunder 3 h

Soil

tolerates any pH
acidicneutralalkaline
dry to averageloamysandy

Watering

Garden nasturtium — Watering
drought tolerant once establishedless when it rains

How much space it takes

Mature size.

The mature plant next to a person (175 cm).

1 m2 m3 m0.3–3 mspread 0.3–0.9 m
0.3–3 m× spread 0.3–0.9 m

Plant 30 cm apart.

How to plant: in rows, 30 cm in the row, 30 cm between rows

The final size depends on the cultivar and the spot — we give the range from smallest to largest.

Calendar

Through the year.

Months for Central Europe. The line shows the current month.

The year at a glance

Flowers: JanuaryFlowers: FebruaryFlowers: MarchFlowers: AprilFlowers: MayFlowers: JuneFlowers: JulyFlowers: AugustFlowers: SeptemberFlowers: OctoberFlowers: NovemberFlowers: DecemberSowing: JanuarySowing: FebruarySowing: MarchSowing: AprilSowing: MaySowing: JuneSowing: JulySowing: AugustSowing: SeptemberSowing: OctoberSowing: NovemberSowing: DecemberPruning: JanuaryPruning: FebruaryPruning: MarchPruning: AprilPruning: MayPruning: JunePruning: JulyPruning: AugustPruning: SeptemberPruning: OctoberPruning: NovemberPruning: DecemberHarvest: JanuaryHarvest: FebruaryHarvest: MarchHarvest: AprilHarvest: MayHarvest: JuneHarvest: JulyHarvest: AugustHarvest: SeptemberHarvest: OctoberHarvest: NovemberHarvest: DecemberJanFebMarAprMayJunJulAugSepOctNovDec
FlowersSowingPruningHarvest
Now, in October: time to prune (deadhead spent flowers). · watch for cabbage caterpillars (cabbage white butterflies, cabbage moth, diamond-back moth).
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

June–October · orange, yellow, red, pink or white

Sowing

JanFebMarAprMayJunJulAugSepOctNovDec

direct sowing: April–May

Pruning

JanFebMarAprMayJunJulAugSepOctNovDec

deadhead spent flowers (June–October)

Harvest

JanFebMarAprMayJunJulAugSepOctNovDec

June–August

Feeding

Nutrition.

No feeding

Pruning

When and how to prune.

Months apply to Central Europe.

Garden nasturtium — Deadhead spent flowers

Deadhead spent flowers

JunJulAugSepOct
How to prunePrune lightly: spent flowers.

Pests and diseases

Common problems and what to do.

The most common problems in Central Europe. Protection is listed from the gentlest option.

Glasshouse whitefly

Glasshouse whitefly

Trialeurodes vaporariorum
pest
More about this problem

What you will see

Tiny white winged insects, sticky honeydew and sooty mould.

When to look

Outdoors mainly in warm summers, under glass throughout the growing season

How to protect

  1. Prevention
    • Check/isolate new plants; remove unneeded host plants; ventilate well.
  2. By handCheck regularly and remove affected parts.
Glasshouse whiteflypest · outdoors mainly in warm summers, under glass throughout the growing season

What you will see

Tiny white winged insects, sticky honeydew and sooty mould.

When to look

Outdoors mainly in warm summers, under glass throughout the growing season

How to protect

  1. Prevention
    • Check/isolate new plants; remove unneeded host plants; ventilate well.
  2. By handCheck regularly and remove affected parts.
More about this problem

What you will see

Fine pale speckling of leaves, tiny mites and fine webbing on the undersides; leaf drop in severe attacks.

When to look

Outdoors in summer, especially in hot, dry weather

How to protect

  1. Prevention
    • Avoid hot, dry and overcrowded spaces; remove weeds and plant debris for winter.
  2. By handRegularly misting plants with water reduces the risk but is not enough on its own; remove heavily affected plants.
  3. BiologicalPredatory mite Phytoseiulus persimilis.
Two-spotted spider mitepest · outdoors in summer, especially in hot, dry weather

What you will see

Fine pale speckling of leaves, tiny mites and fine webbing on the undersides; leaf drop in severe attacks.

When to look

Outdoors in summer, especially in hot, dry weather

How to protect

  1. Prevention
    • Avoid hot, dry and overcrowded spaces; remove weeds and plant debris for winter.
  2. By handRegularly misting plants with water reduces the risk but is not enough on its own; remove heavily affected plants.
  3. BiologicalPredatory mite Phytoseiulus persimilis.
More about this problem
Cabbage caterpillars (cabbage white butterflies, cabbage moth, diamond-back moth)pest · May–October

What you will see

Holes in leaves and caterpillars on the leaves.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
May–October

How to protect

  1. By handPick off eggs and caterpillars; cover with fine mesh that does not touch the leaves.
  2. BiologicalBiological control of caterpillars is available; they are naturally parasitised by the wasp Cotesia glomerata.
More about this problem
Sources (4)

Frequently asked

Quick answers.

When does garden nasturtium flower?

In June–October; the flowers are orange, yellow, red, pink or white.

When do I sow garden nasturtium?

In April–May (direct sowing).

When is garden nasturtium harvested?

In June–August.

Does garden nasturtium tolerate shade?

It tolerates part shade (3–6 hours of sun), but not full shade.

How much space does garden nasturtium need?

At maturity 0.3–0.9 m wide and 0.3–3 m tall; recommended spacing 30 cm.

Glasshouse whitefly — what can you do?

Check/isolate new plants; remove unneeded host plants; ventilate well. Check regularly and remove affected parts.

Two-spotted spider mite — what can you do?

Avoid hot, dry and overcrowded spaces; remove weeds and plant debris for winter. Regularly misting plants with water reduces the risk but is not enough on its own; remove heavily affected plants.

Sources (9) Checked 22 October 2026

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