Radishes in Pots: The Fastest Harvest in the Urban Garden

If you want a quick win in your urban garden, sow radishes: they're harvested in 3-4 weeks, take no space and are nearly foolproof. They're the ideal crop to get started and to get kids hooked on gardening.

Pot and soil

Radishes have shallow roots: a pot or planter just 6 inches deep is enough. Use loose, fine soil with good drainage.

Sowing (direct and simple)

1. Sow the seeds directly, half an inch deep and about an inch apart.
2. Keep the soil moist: they germinate in a few days.
3. Thin them if they come up too close: if they compete, the bulb won't swell.

Light and watering

They want sun or part shade (4-6 hours) and, above all, steady watering. Lack of water makes them spicy, fibrous and hollow. Consistent moisture gives crisp, mild radishes.

Why they grow "all leaf and no bulb"

It's the most common problem, usually due to:

• Too much heat: they're a cool-season crop; in heat they go to leaf. Sow in spring and fall.
• Too little light: they need sun to form the bulb.
• Sowing too dense: they compete and don't swell.

Succession sowing

Sow a handful every 1-2 weeks and you'll have fresh radishes continuously. Since they grow so fast, slip them in between slower crops.

With sun, steady watering and cool weather, you'll get your first harvest in under a month. Your radishes looking off? Try the AI diagnosis.