Most gardeners who want salad in January reach for a hardy lettuce, cover it, and hope. It works, but it is the hardest way to do it. The leaves that actually walk through a British or Dutch winter without complaint are a scattered group of species that have almost nothing in common except an ability to keep their leaves green at temperatures that flatten a lettuce: corn salad, claytonia, land cress, wild rocket and the oriental brassicas. Sow a band of each in the next two weeks and you will be cutting salad from November to March. The useful way to think about them is as a portfolio — each one fails in a different way, so growing five of them means you never lose the whole crop at once.
- Sow by Oriental brassicas mid-Sept · corn salad & claytonia to early Oct
- Where Direct into bands 10 cm wide, 1 cm deep · no need to thin hard
- Hardiness Corn salad and claytonia to −15 °C unprotected · brassicas around −8 °C
- Cut From 6–8 weeks · 3–4 cuts per sowing, always above the crown
Why not simply grow more lettuce?
You should grow lettuce too — our guide to winter lettuce covers the varieties and timing in detail, and nothing else gives you that sweet, substantial base to a salad bowl. But Lactuca sativa is a Mediterranean annual that we have persuaded to overwinter, and it shows: it wants a cover in hard frost, it rots at the heart in a wet December, and a cut surface below about 5 °C does not heal.
The species in this article are different. Corn salad and claytonia are cool-climate plants that treat a British winter as their normal growing season, and the oriental brassicas come from a part of the world where autumn is the main cropping window rather than an afterthought. They grow faster than lettuce, survive colder, and — the part nobody mentions — several of them taste distinctly better after a frost.
The four groups, and how each one fails
Corn salad (Valerianella locusta), also sold as lamb's lettuce or mâche, is the hardiest salad in the garden and the mildest in flavour. It is also the one with a genuine quirk: corn salad seed germinates poorly above about 20 °C of soil, which is precisely why it is a September crop and not an August one. Its weakness is speed — it is slow and the rosettes are small, so sow three times as much as you think you need. Find it by species under Valerianella locusta.
Claytonia (Claytonia perfoliata), winter purslane or miner's lettuce, produces succulent, round leaves on a stalk that pushes through the middle of the leaf. It is exceptionally hardy, mild and crunchy, and it is the only winter leaf that reliably regrows after a January cut. Its failing is enthusiasm: it self-seeds so freely that one sowing tends to be permanent. See claytonia or winter purslane.
Rocket divides into two species that behave nothing alike. Annual salad rocket (Eruca sativa) is fast and mild but bolts at the first mild spell. Wild or perennial rocket (Diplotaxis tenuifolia) is slower, considerably hotter, far hardier and will crop for two or three years from one sowing. For winter, choose the wild one; the full range is in the rocket collection. Both are flea beetle targets in a warm autumn.
Oriental brassicas — mizuna, tatsoi, pak choi, Chinese cabbage and the mustards — are the generous ones: fast, big-leaved and productive, and they fill the bowl while the others are still small. Browse them together in Asian greens, by species under Brassica rapa and Brassica juncea, or individually as mizuna, tatsoi, pak choi and Chinese cabbage. Their weakness is the calendar at both ends: sown too early they are stripped by flea beetle, and in February they run to flower before anything else does. The guide to growing mustard greens covers that group in full.
One more worth adding: land cress (Barbarea verna) has the peppery flavour of watercress without needing running water, tolerates damp and partial shade, and is hardy enough to be ignored all winter. It is a small collection — see land cress and the wider cress range.
How to sow winter salad leaves
- Sow in bands, not rows A band 10 cm wide and 1 cm deep, seed scattered thickly along it. You are growing a crop to cut, not individual plants to grow on — so thin only enough to stop the seedlings matting.
- Cool the drill for corn salad If early September is still warm, water the open drill with cold water and sow in the evening. Corn salad simply will not germinate in warm soil — the same thermo-inhibition described in our spinach guide.
- Fleece the brassicas from day one Flea beetle is still active into early autumn and shot-holed seedlings never catch up. Insect mesh over the band until the leaves are 5 cm — see garden pests and control.
- Do not feed Nitrogen in autumn gives soft, watery leaves that collapse at the first frost and rot underneath. Unfed plants grow slower and survive far better.
- Cover from late October, and ventilate A cloche or fleece keeps the leaves clean and pickable rather than adding much warmth. Open it on any day above freezing — see cloches, fleece and cold frames.
Two sowing deadlines, not one
Sow by mid-September
Mizuna, tatsoi, pak choi, mustards, salad rocket.
- Fast: cutting in 5–6 weeks
- Biggest leaves, biggest yield
- First to bolt in February
Sow to early October
Corn salad, claytonia, land cress, wild rocket.
- Slow: cutting from December
- Hardiest of everything here
- Still cropping in March
The split matters because the two groups cover different halves of the winter. The brassicas carry you from November to Christmas; the hardy natives take over from January, when the brassicas have been cut out and the light is at its worst. Add some bitterness for balance with chicory, radicchio or endive, a row of winter spinach, and — for a completely different kind of insurance — a tray of microgreens indoors, which are ready in ten days whatever the weather does.
Cutting: where most people lose the second harvest
Cut-and-come-again is not a description of the plant, it is a description of a technique. Take a handful of leaves, hold them together, and cut straight across with scissors 2.5 to 4 cm above the soil — above the growing point, which sits at the centre of the rosette. Cut lower and you take the crown with the leaves and that band is finished; cut higher and you leave tough stubs that rot. Done properly, most winter leaves give three or four cuts from one sowing, with claytonia and mizuna the most willing.
Timing matters as much as height. Cut in the morning, on a day above freezing, and never when the leaves are frozen — a frozen leaf is full of ice crystals and turns to mush in the bowl. And do not strip a plant bare in December: leaves are the only way it makes anything back at that time of year.
The reward for the cold is flavour. Brassicas respond to frost by converting stored starch into soluble sugars as a natural antifreeze, so mizuna and tatsoi in January are noticeably sweeter and milder than the same leaf in September. Rocket goes the other way — cold and stress push up the mustard oils, so winter rocket is the hottest rocket you will ever eat. Neither is a fault; both are worth planning a bowl around.
Common winter salad mistakes
- Sowing corn salad in warm soil — an August sowing on a hot bed simply will not come up. Wait for the soil to drop below 20 °C, or sow in the evening into a watered drill.
- Treating the brassicas as the whole crop — they are the best value in November and gone by February. The hardy leaves are what carry you through the second half.
- Cutting into the crown — the single reason people get one harvest instead of four.
- Feeding for size — soft nitrogen-fed leaves are the first to freeze and the first to rot.
- Sealing the cloche — still, damp air at 4 °C is what grey mould wants. Ventilate whenever it is above freezing, and see damping off and mould.
- Forgetting slugs — they stay active all winter under a cover and prefer claytonia to almost anything else.
Frequently asked questions
Is it too late to sow winter salad leaves in late September?
Not quite, but the list narrows. Corn salad, claytonia and land cress can go in until the first week of October and will still crop, if a little later; the oriental brassicas really want to be in by the middle of September to build enough leaf before growth stops. After early October, sow into a cold frame, a greenhouse border or a deep raised bed under cover rather than into open ground.
Can I grow winter leaves in pots?
Yes, and it is often better. A wide, shallow container against a bright wall drains well, warms quickly and keeps slugs at a slight disadvantage. Use fresh compost and a container at least 20 cm deep — our container growing guide covers the details.
Do winter salad leaves need full sun?
They need the brightest spot you have in December, which is not the same thing. Land cress and claytonia are the most shade-tolerant of the group and will crop on a north-facing bed; the brassicas want as much light as they can get. Our guide to what to grow in shade explains how to count the hours a bed actually receives.
Why has my winter salad stopped growing in December?
Because below roughly ten hours of daylight, growth all but stops — which is why the sowing date matters more than anything you do afterwards. The plants are not dying, they are holding. Growth resumes in February and the biggest single harvest of the whole crop usually comes in March, just as the mizuna starts to bolt.
Half an hour with a rake and five packets this week buys you five months of salad, which is the best return on effort anywhere in the vegetable garden. Put the leaves in one bed and, while you have the tools out, start a row of broad beans in the next one — the two jobs are a perfect pair, since the salad feeds you all winter while the beans quietly build the roots that will crop next June. Choose from our lettuce, kale and chard collections alongside the leaves above, browse the whole vegetable seed range, and keep the rest of our growing guides to hand for everything that comes next.
