
Lactuca sativa
A fast-growing leafy green vegetable with crisp, tender leaves. Lettuce comes in many varieties including butterhead, romaine, leaf, and iceberg types. It's a cool-season crop that thrives in spring and fall, offering mild to slightly bitter flavors depending on the variety.
Step-by-step instructions for growing Lettuce
Change the guide to see different planting timelines and tips.
Grow hearting varieties like Iceberg or Cos for harvesting whole heads.
Sow seeds in modules or trays from 5th March - 19th March. Cover lightly with of compost and keep at for germination. Provide bright light to prevent leggy seedlings.
Prick out seedlings into individual pots when they have two true leaves, around 26th March - 2nd April. Handle them by the leaves to avoid damaging the stems. Grow them on in a cool, bright spot.
Harden off plants over 7-10 days before transplanting, from 9th April - 16th April. Gradually expose them to outdoor conditions by placing them outside during the day and bringing them in at night.
Transplant seedlings outdoors from 16th April - 30th April. Space them apart in well-drained soil. Water in well and protect from slugs with organic deterrents.
Water regularly to keep soil moist and apply a balanced liquid feed every two weeks from 7th May - 29th September. Consistent moisture prevents bolting and encourages firm heart formation.
Harvest heads when they feel firm and full, from 12th June - 29th September. Cut the entire head at the base with a sharp knife. Harvest in the morning for the crispest leaves.
Popular varieties of Lettuce to consider
A compact Cos variety with sweet, crisp hearts. Ideal for small spaces and containers, maturing quickly.
A heritage butterhead lettuce dating back to the 1850s. Produces tennis-ball sized heads with soft, buttery leaves and sweet flavour. Perfect for small gardens, raised beds, and containers. Matures quickly in 6-7 weeks. Cold-hardy and excels in spring and autumn plantings.
A loose-leaf lettuce with frilly, red-edged leaves. Excellent for cut-and-come-again harvesting and adds colour to salads.
A crisphead lettuce forming tight, crunchy heads. Requires a longer growing season but stores well after harvesting.