Sowing window (UK)March to September
Minimum soil temperature5°C at seed depth
Sowing depth1 cm
Spacing15 cm apart
Days to germination4 days
Days to harvest25 days
Sowing methodDirect sow outdoors
Frost hardyYes
Sunfull-sun
Wateringmoderate
Plant familyBrassicaceae

When should I sow Radish 'French Breakfast' in the UK?

In the UK, sow Radish 'French Breakfast' from March to September. It is normally sown direct outdoors. Wait until the soil has reached 5°C at seed depth rather than going by the calendar - radish will sit and rot in cold ground.

What soil temperature does Radish 'French Breakfast' need to germinate?

Radish 'French Breakfast' needs a minimum soil temperature of 5°C at seed depth to germinate reliably. Below that, germination is slow and patchy, and seed is more likely to rot than sprout. Measure at around 5cm down, in the morning, rather than trusting air temperature.

How deep and how far apart should I sow Radish 'French Breakfast'?

For Radish 'French Breakfast', sow it 1cm deep and space plants 15cm apart.

How long does Radish 'French Breakfast' take to grow?

Radish 'French Breakfast' takes roughly 25 days from sowing to harvest. Seed usually germinates in about 4 days.

Is Radish 'French Breakfast' frost hardy?

Yes. Radish 'French Breakfast' is frost hardy and will stand through UK frosts, so it can be left out over winter in most of the country.

Sowing data cross-checked against RHS growing guides and UK seed-merchant catalogues. Soil temperatures are the minimum for reliable germination, measured at seed depth.