Sowing window (UK)March to September
Minimum soil temperature5°C at seed depth
Sowing depth1 cm
Spacing15 cm apart
Days to germination10 days
Days to harvest60 days
Sowing methodDirect sow outdoors
Frost hardyYes
Sunpartial-shade
Wateringlow
Plant familyValerianaceae

When should I sow Lamb's Lettuce in the UK?

In the UK, sow Lamb's Lettuce 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 - lamb's lettuce will sit and rot in cold ground.

What soil temperature does Lamb's Lettuce need to germinate?

Lamb's Lettuce 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 Lamb's Lettuce?

For Lamb's Lettuce, sow it 1cm deep and space plants 15cm apart.

How long does Lamb's Lettuce take to grow?

Lamb's Lettuce takes roughly 60 days from sowing to harvest. Seed usually germinates in about 10 days.

Is Lamb's Lettuce frost hardy?

Yes. Lamb's Lettuce 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.