Root vegetable
Can you grow Radish on a balcony?
Raphanus sativus
Yes — great in containers
Radish (Raphanus sativus) grows well on a balcony in a pot of at least 8 litres (about 20 cm deep). It needs full sun — around 6+ hours of direct sun a day. Very fast: ready in about 3–4 weeks (as little as 24 days). All figures below are sourced from RHS and the Old Farmer's Almanac.
Sun
☀️ Full sun (6+ h)
Min. pot
8 L · 20 cm
Water
Medium
Difficulty
Easy
Hardiness
Annual
Container fit
Excellent
Sow
Sow from very early spring, seeds 1cm deep and 2.5–5cm apart; sow in succession. Short-rooted salad types suit containers.
Harvest
Very fast: ready in about 3–4 weeks (as little as 24 days)
Good companions: Carrots and beets (interplant); helps break soil crust for later-sprouting carrots
Balcony tip: These shallow-rooted crops thrive in window boxes or small pots; RHS suggests a container at least 30cm wide and deep for salad radishes.
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Häufige Fragen
What size pot does Radish need?
Radish needs a container of at least 8 litres, roughly 20 cm deep. Bigger pots dry out more slowly and give better yields on a balcony.
How much sun does Radish need on a balcony?
Radish wants full sun — about 6+ hours of direct sun daily. Match it to your balcony's aspect before buying seed.
When do you sow Radish?
Sow from very early spring, seeds 1cm deep and 2.5–5cm apart; sow in succession. Short-rooted salad types suit containers.. Timing shifts with your climate/USDA zone — the linked sources give the detail.
Sources & date
- RHS: Radish
- Old Farmer's Almanac: Radish
- Data as of: 2026-07-10
- Container sizes and timings are guidance — adjust to your climate/USDA zone and balcony aspect.