🥬 Lettuce 'Oak Leaf'

Sowing window (UK)	March to August
Minimum soil temperature	5°C at seed depth
Sowing depth	1 cm
Spacing	25 cm apart
Days to germination	7 days
Days to harvest	50 days
Sowing method	Direct sow outdoors
Frost hardy	Yes
Sun	partial-shade
Watering	moderate
Plant family	Asteraceae

When should I sow Lettuce 'Oak Leaf' in the UK?

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

What soil temperature does Lettuce 'Oak Leaf' need to germinate?

Lettuce 'Oak Leaf' 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 Lettuce 'Oak Leaf'?

For Lettuce 'Oak Leaf', sow it 1cm deep and space plants 25cm apart.

How long does Lettuce 'Oak Leaf' take to grow?

Lettuce 'Oak Leaf' takes roughly 50 days from sowing to harvest. Seed usually germinates in about 7 days.

Is Lettuce 'Oak Leaf' frost hardy?

Yes. Lettuce 'Oak Leaf' 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.