Flower
Can you grow Nasturtium on a balcony?
Tropaeolum majus
Yes — great in containers
Nasturtium (Tropaeolum majus) grows well on a balcony in a suitable container. It needs full sun — around 6+ hours of direct sun a day. Flowers from summer through to autumn; pick leaves and flowers throughout the season.. All figures below are sourced from RHS and the Old Farmer's Almanac.
Sun
☀️ Full sun (6+ h)
Water
Low
Difficulty
Easy
Hardiness
Annual
Container fit
Excellent
Sow
Sow March to May direct where they are to flower; seedlings emerge in 7-10 days. They dislike transplanting.
Harvest
Flowers from summer through to autumn; pick leaves and flowers throughout the season.
Good companions: Brassicas, cucumbers, melons, squash, beans and cabbage; used as a trap crop to draw aphids away
Balcony tip: Grows well in patio pots and hanging baskets in poor, well-drained soil - rich soil gives leaves at the expense of flowers; leaves and flowers are edible with a peppery flavour.
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What size pot does Nasturtium need?
Container size for Nasturtium isn't specified by our sources for a single value — as a rule, give roots room and don't let a small pot dry out. Check the linked RHS/Almanac page.
How much sun does Nasturtium need on a balcony?
Nasturtium wants full sun — about 6+ hours of direct sun daily. Match it to your balcony's aspect before buying seed.
When do you sow Nasturtium?
Sow March to May direct where they are to flower; seedlings emerge in 7-10 days. They dislike transplanting.. Timing shifts with your climate/USDA zone — the linked sources give the detail.
Sources & date
- RHS: Nasturtium
- Old Farmer's Almanac: Nasturtium
- Data as of: 2026-07-10
- Container sizes and timings are guidance — adjust to your climate/USDA zone and balcony aspect.