When can I sow and harvest lamb's lettuce?

Sow August to October for autumn–winter–spring cropping. Don't sow March–July — plants bolt almost immediately in warm weather. Harvest from October through to April, peaking in October–November and again in March–April with slow steady cropping through December–February. Cut whole rosettes at 5–7 cm rather than picking individual leaves.

Will lamb's lettuce survive a UK winter?

Yes — it's one of the hardiest winter salads (RHS H7). Survives normal UK winters in the open, including frost and snow. Frost-rimed leaves taste sweeter. In hard winters (-10°C and below), cover with a cloche or fleece for protection — but most years no protection is needed. Snow cover acts as natural insulation. Lamb's lettuce is one of the few culinary crops that genuinely produces leaves in January and February.

What does lamb's lettuce taste like?

Mild, faintly nutty, with a soft buttery texture. Much less sharp than rocket or watercress; far milder than mustard greens or chicory. The flavour is delicate — pairs well with sharp citrus dressings, sweet beetroot, walnuts, blue cheese, smoked salmon. Classic French use: mâche salad with hot bacon dressing and warm croutons. UK gardeners: think of lamb's lettuce as a less aggressive substitute for rocket through winter when rocket is bolting or absent.

Can I grow lamb's lettuce in pots?

Yes — perfect for pots and windowboxes. A 25 cm pot of peat-free compost holds 10–15 rosettes. Sow in September, water consistently. Pot lamb's lettuce gives the same winter cropping as in-ground plants with the convenience of moving the pot to a sheltered position in hard weather. Three pots in rotation gives continuous winter salad. For a cloche-protected pot: place a glass cloche or inverted plastic bottle over the pot in hard frost.

Is lamb's lettuce the same as corn salad?

Yes — different names, same plant. Lamb's lettuce (UK common name), corn salad (older UK name, traditional), mâche (French name, often used in UK food writing). All three names refer to Valerianella locusta. The corn in corn salad refers to grain fields where the plant naturally self-seeds as a winter annual weed — hence corn in the British sense of cereal grains, not American sweetcorn.

Why do my lamb's lettuce rosettes stay small?

Three usual causes. (1) Wrong season: summer-sown plants bolt before sizing up. Sow August–October only. (2) Crowded planting: thin seedlings to 10 cm; overcrowded plants stay small. (3) Hard winter conditions: rosettes grow slowly in December–February — that's normal. Spring flush (March–April) brings the largest rosettes of the year. Patience is the rule; lamb's lettuce isn't a fast-growing crop.

Lamb's lettuce

Valerianella locusta

vegetable

About

Sow lamb's lettuce direct from August to October, in sun or part shade in well-drained soil — it's a very hardy winter salad green (RHS H7) that fills the gap when most other salads are dormant, cropping through autumn, winter, and into spring. Lamb's lettuce forms small flat rosettes of soft mild oval leaves with a faintly nutty flavour. Outdoors it crops through frost and snow — one of the few salad greens that genuinely produces useable leaves in January and February. Sown in spring it bolts almost immediately in warm weather; this is fundamentally an autumn-winter-spring crop. Cut whole rosettes when leaves are 5–7 cm long — pick individual leaves and the plant disappoints. Self-seeds modestly. Distinct from lettuce (different family entirely).

How to grow lamb's lettuce

1
Understand the season — autumn–winter–spring only
Lamb's lettuce is fundamentally a cold-season crop. Sowings between April and July bolt to flower within weeks of germination. The useful sowing window is August to October for autumn–winter–spring cropping. March–April sowings of overwintered plants give a final spring flush before bolting in May. Don't try to grow lamb's lettuce in summer.
2
Sow direct, August to October
Direct-sow in shallow drills 1 cm deep, 15–20 cm between rows. Germination is slow (10–21 days) and needs cool soil — autumn-sown lamb's lettuce often germinates better than spring sowings. Thinly sown rows crop better than crowded ones. Thin to 10 cm spacing once seedlings have 2–3 leaves.
3
Pick a UK-suitable variety
Vit: the UK workhorse — vigorous, large rosettes, very hardy. Verte de Cambrai: traditional French variety, smaller darker rosettes, classic flavour. Coquille de Louviers: heritage variety, tightly-spiralled rosettes, good cold tolerance. For a first crop: Vit — reliable and easy.
4
Site in part shade for the warmer end of the season
August–September sowings benefit from light shade — full sun in warm weeks accelerates bolting. October sowings and later: full sun is fine. For winter cropping outdoors: any sunny or part-shaded position; lamb's lettuce shrugs off frost and snow on the leaves.
5
Crop in autumn, then continuously through winter
From October onwards, cut whole rosettes (not individual leaves) at 5–7 cm when they're well-formed. Snip at the base with scissors or a sharp knife. Don't bother picking individual leaves — they're small, and removing them leaves a damaged rosette that doesn't regrow well. Whole-rosette harvest is the right technique.
6
Continue cropping through frost and snow
Lamb's lettuce keeps producing through normal UK winters — slow growth in December–February, but the rosettes don't die back. Frost-rimed leaves taste mildly sweeter after a cold night. In hard frost: protect with a cloche or fleece, but most leaves are usable even without protection. Snow cover acts as natural insulation; brush snow aside to harvest.
7
Spring flush before bolt
Overwintered plants put on a final flush of growth in March–April before bolting to flower in May. The spring flush is the easiest cropping of the year — fast growth, no bolting yet, the largest rosettes. By late April or early May, plants start bolting; flowering stems mean leaves get tough. Pull bolted plants, replace with summer crops in the same row.
8
Let some plants flower for self-seeding
Bolted lamb's lettuce produces tiny pale-blue flowers in clusters. Let one or two bolted plants flower and set seed — the small grey-brown seeds drop and produce volunteer plants the following autumn. Or save seed in summer by cutting flower stems before shatter and threshing into a paper bag. Free re-sowing for next winter without buying packets.

Common questions

The lamb's lettuce year in your garden

Dispatching imaginary bots to check your garden out...

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Hardiness Zones

H1a (tender)H7 (very hardy)

H1a

H1b

H1c

RHS H7

USDA 4–5 equivalent