How to Grow Lettuce & Salad Greens All Season

GardenDraft Team · May 5, 2026 · Updated August 1, 2026 · 8 min read

Part of: Garden Planning Guides · How to Grow Vegetables — Crop Guides A–Z

Lettuce is the crop that makes you feel like a natural the first time you grow it: it sprouts in days, grows fast, asks for very little, and you can start picking long before it's "done." The only real skill is timing, because lettuce is a cool-weather plant at heart. Work with its love of cool and you can have fresh salad on the table for most of the year.

Cool weather is what lettuce wants

Lettuce and most salad greens grow best in the cool of spring and fall, when temperatures sit in the 60s°F. They germinate poorly in hot soil and turn bitter and bolt when summer arrives. So the prime sowing windows are early spring and again in late summer for a fall crop: the shoulders of the season, not its peak. In hot regions, a spot with afternoon shade stretches the spring crop further. Check the lettuce catalog page for variety differences.

The catalog's spring window runs from one to three weeks before your last frost for the first sowings — seedlings shrug off light frost, and hardened plants tolerate the mid-20s°F — with fresh sowings continuing right through the weeks after (what your last frost date means). For fall, start sowing again about eight weeks before your first frost and keep going; mature fall plants stand well into freezing nights, and a cold frame or hoop house can carry salads into winter.

Know the four lettuce types

All lettuce grows the same way, but the types trade speed for structure. Loose-leaf is fastest — baby leaves in under a month at the quick end of the catalog range — and the best cut-and-come-again producer. Butterhead makes soft, silky small heads and tolerates a little more heat than its looks suggest. Romaine stands upright, takes longer, and brings crunch and better bolt resistance than most. Crisphead (iceberg) is the slow, fussy one, at the far end of the catalog's roughly 30-to-80-day span, and the least forgiving of warm nights — the type to attempt in fall rather than spring. A packet of each, sown in short rows, teaches you which your climate and salad bowl prefer.

And "salad greens" is bigger than lettuce: the same bed logic grows spinach (which has cold-loving quirks of its own), arugula, and the mustardy Asian greens, all sown the same shallow way on the same cool-season clock. A mixed cutting band of lettuce, arugula, and baby kale gives a more interesting bowl than any single packet.

Sow shallow and often

Lettuce seed is tiny and needs light to germinate, so barely cover it — a dusting of soil is enough — and keep the surface damp until it sprouts, which can take just a few days. You can start indoors for transplants or direct-sow; both work. Most salad greens are happy in shallow soil and even containers, making lettuce one of the easiest crops for beginners.

For transplants, the catalog timeline is 4–6 weeks from sowing to a plantable seedling plus a quick 5–7 day hardening off. Spacing depends on your ambition: baby-leaf bands get sown thick and never thinned, while full heads want real room — the square-foot value is 6 inches, four per square, with big romaines and crispheads happier at 10–12 inches. One heat-season trick worth knowing: lettuce seed stalls in soil much above 80°F, so for late-summer sowings, germinate seed indoors somewhere cool or shade the seedbed until sprouts show. Shade is a legitimate lettuce tool in general — a 30-percent shade cloth on hoops, or simply the east side of a trellis of pole beans, buys the crop several extra degrees of summer and several extra weeks of quality; lettuce headlines the list of vegetables that tolerate shade.

Shallow roots, steady water, light feeding

Lettuce is nearly all water and grows nearly all of it in the top few inches of soil, which means it feels drought before anything else in the garden. Light, frequent watering beats deep soakings here — the reverse of the usual rule — and moisture stress is the fastest route to bitter leaves (watering guide). Work compost into the bed and most soils need nothing more for such a short crop; in lean ground a gentle nitrogen feed two or three weeks in keeps the factory running (feeding basics). Slugs adore lettuce as much as you do — the slug and snail playbook earns its keep — and aphids tucked into folds are the other regular; a hard rinse at harvest handles light populations. Bottom leaves rotting in wet weather usually means plants are crowded: thin, and water in the morning.

Harvest the smart way: cut and come again

What makes lettuce so productive is that you don't have to wait for a whole head. Pick the outer leaves as you need them and the plant keeps growing from the center, or shear a whole patch of loose-leaf types an inch above the soil and it regrows for another cut or two. Harvest in the cool morning when leaves are crisp, and you'll pull weeks of salad from one sowing.

Whole heads are ready whenever they feel dense for their type; cut them at the soil line with a knife. Wash, spin dry, and store in the refrigerator wrapped loosely — most lettuce holds a week or more, romaine longest. A limp head revives surprisingly well in a bowl of ice water for half an hour, a trick worth knowing on a hot picking day. If a plant tastes bitter in summer, refrigerating leaves for a day or two mellows some of it, but the honest fix is pulling the plant and resowing for fall.

Keep it coming all season

Two techniques turn lettuce from a brief spring treat into a months-long supply. Sow a short row every two to three weeks rather than all at once — the heart of succession planting, and the catalog's default lettuce interval is 14 days — so a fresh batch is always coming on as the last one tires. And learn to read the warning signs: when a plant shoots up a tall central stalk and the leaves turn bitter, it's bolting, triggered by heat and long days, as covered in why vegetables bolt in summer heat. Pull bolting plants and lean on heat-tolerant varieties through the warm weeks.

Containers deserve a mention because lettuce may be the single best container crop: shallow roots mean a 6-inch-deep trough works, a doorstep pot gets picked more faithfully than a far bed, and you can chase the season by moving pots into shade in June and sun in October. Container lettuce dries out in hours rather than days at summer's peak, so pair shallow pots with morning checks — the crisp reward is worth the small vigilance. Time your spring and fall sowings to your location with the planting calendar.