A picture of a Lettuce

Lettuce

Lactuca sativa

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Also known as

Cabbage Lettuce, Celtuce, Garden Lettuce, Common Lettuce

Kropsla herfst by Rasbak (CC-BY-SA-3.0)

Full Sun
Easy care
Moderate watering
Tender

H6-H2

RHS hardiness

-20°C

Minimum temperature

Expected size

Height
Spread

30cm

Max

30cm

10cm

Min

10cm

Flowering

  • spring
  • summer
  • autumn
  • winter

This plant has no fragrance

More images of Lettuce

Lactuca sativa var. crispa Resi
Lactuca sativa gush katif 2005 A
A photo of Lettuce
A photo of Lettuce

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Lettuce Overview

Lettuce is an edible, leafy herbaceous biennial that is grown as an annual. This leafy annual, which is grown for its succulent crisp leaves, will produce globular heads which are pale green. The lettuce will mature very quickly and can be harvested by the leaf or by the head. The leaves - notched, scalloped, frilly or ruffled - are generally eaten raw in salads and are a rich source of vitamins K and A. Depending on the variety, lettuce plants can vary in size, shape and colour but generally, the leaves form a dense head or a loose rosette of green or red, or a mixture of the two. If allowed to bolt or go to seed, the flowers will be yellow, followed by hairy brown seed heads. Lettuce is a 'cool-season' crop that grows well in the spring, and autumn, as well as the summer and some lettuce seedlings will tolerate a light frost. It's a good idea to make regular sowings for a constant supply. They need a lot of water for a few weeks before harvesting. The loose-leaf varieties are harvested by the outer leaves so that the plant can grow new leaves to be harvested later. The crisphead varieties are very popular for their loosely formed heads of crisp, curling leaves. Butterhead types produce tender leaves that are very tasty. Grow in moist, fertile soil that will not dry out and give full sun or dappled shade.

Common problems with Lettuce

How to harvest Lettuce

Lettuce matures in 45-100 days depending on the variety. Harvest lettuce in the morning, after the plants have had all night to plump up with water. Pull young plants thinning them creating space for the remaining plants and providing the space needed for bigger plants. Gather individual leaves as needed or use scissors to quickly cut fresh leaves.

How to propagate Lettuce

Seed

Direct sow or transplant in Spring. Direct sow shallowly, 2.5 cm apart in rows 30-45 cm apart. Germinates in 7-14 days.

Special features of Lettuce

Crop rotation

Fast, light feeders that are useful for growing in between other crops and for crop rotation.

Other uses of Lettuce

Culinary, can be grown in containers

Medicinal

Lettuces (especially red ones) add vitamins A and K to help with eyesight and dense bone structures.

Edible

Leaves and stems are edible.

Lettuce

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