How to grow Climbing Nasturtium in the UK
Tropaeolum majus (climbing)
Climbing Nasturtium (Tropaeolum majus (climbing)) is a flower that grows well in UK gardens. Vigorous annual climber — 2m+ in a season. Edible flowers brighten salads. This guide covers when and how to sow Climbing Nasturtium, the soil and position it likes, watering and feeding, companion planting, and when to harvest.
When to sow & grow Climbing Nasturtium
Sowing and harvest window through the year (UK):
Jan | Feb | Mar | Apr Sow | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
Soil, position & care
- Soil
- Fertile, moisture-retentive soil with support to climb
- Soil pH
- 6.0–7.5
- Position
- Roots in shade/cool, top growth to the light
- Sowing depth
- Plant rootball level; lean toward the support
- Spacing
- Allow 1–3 m per plant
- Sowing
- Plant spring or autumn against a wall, trellis or obelisk
- Growing
- Tie in new growth; water well while establishing
- Harvest & upkeep
- Prune to keep within bounds — timing depends on flowering season
- Watch for
- Aphids, powdery mildew; vine weevil in containers
Companion planting for Climbing Nasturtium
No specific companion notes for this plant.
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Climbing Nasturtium FAQs
When should I sow Climbing Nasturtium in the UK?
In the UK, sow Climbing Nasturtium in April. Sowing across these months gives the plant the right soil temperature and day length to establish well.
How much sun does Climbing Nasturtium need?
Climbing Nasturtium prefers full sun (6+ hrs direct).
Is Climbing Nasturtium easy to grow?
Easy — good for beginners. Vigorous annual climber — 2m+ in a season. Edible flowers brighten salads.