How to Plant Lettuce (US Guide)

Why lettuce is the best first vegetable crop

Lettuce is the fastest, most forgiving, and most rewarding vegetable crop for first-time US gardeners—it grows from seed to harvest in 30–60 days, requires no trellising or staking, and thrives in the cool seasons when many other crops fail.

The caveat is timing. Lettuce is a cool-season crop. Plant it at the wrong time and it bolts to seed within weeks, becoming bitter and unusable. Plant it in the right window and it produces more leaves than a household can eat through weeks of harvest.

In most of the US, “the right window” means two distinct seasons: spring (planting 4–6 weeks before last frost) and fall (planting 6–8 weeks before first fall frost). Understanding which window you’re working in determines variety choice, spacing, watering, and harvest strategy.

Lettuce types to know before planting

Not all lettuce behaves the same. Choosing the right type for your situation makes the difference between a productive row and a batch of bitter stems.

For most US home gardens, loose-leaf varieties are the right choice:

• They’re the fastest to harvest
• You can harvest outer leaves while the plant continues producing
• They take less space than head types
• They’re more forgiving of minor temperature fluctuations

Popular loose-leaf varieties for US gardens: ‘Black Seeded Simpson,’ ‘Red Sails,’ ‘Oakleaf,’ ‘Lollo Rossa,’ ‘Nevada’ (heat-tolerant), and ‘Jericho’ (heat-tolerant).

For romaine specifically, our romaine lettuce guide covers head development, spacing, and harvest timing.

Planting calendar by USDA zone

The spring and fall planting windows shift based on your zone’s frost dates. This table gives approximate planting targets for loose-leaf varieties:

Key principle: Fall lettuce timing is tighter than spring. Spring planting can be pushed a few weeks late without disaster—the plant will still produce before heat arrives. Fall planting that runs late means the plant doesn’t mature before hard freeze, and you lose the crop.

Soil preparation

Lettuce grows in most well-drained soils, but performs best with:

• pH: 6.0–7.0
• Organic matter: High—work 2–3 inches of compost into the top 6 inches before planting
• Drainage: Good—lettuce roots are shallow (4–6 inches) and rot in waterlogged soil

Before planting, test soil pH if you’ve had poor results previously. Acid soil below 6.0 limits lettuce’s nutrient uptake and causes yellowing leaves. Our how to test soil pH guide covers simple testing methods available at US garden centers.

In clay-heavy soils, raise the planting area 4–6 inches with added compost and topsoil to improve drainage. Lettuce in compacted, waterlogged soil produces bitter, slow-growing plants.

How to plant lettuce from seed

Lettuce is almost always grown from seed rather than transplants in US home gardens. Seeds are cheap, germinate fast, and direct-seeded lettuce develops naturally without transplant stress.

Direct seeding outdoors

1. Prepare the bed. Rake the surface smooth. Remove clods and debris that would block germination.

2. Moisten the soil surface. Water gently until the top inch is moist but not saturated.

3. Make shallow rows. Using your finger or a small stick, draw a 1/4-inch shallow groove across the bed, 12 inches between rows for loose-leaf types.

4. Sow seeds. Drop seeds along the row, spacing roughly 1 inch apart. You’ll thin later—sow a little thick, then remove extra seedlings.

5. Do not cover the seeds. Lettuce seeds require light to germinate. Press seeds gently into the soil surface with the palm of your hand to ensure contact, but do not cover them with soil.

6. Water gently. Use a watering can with a fine rose or a gentle spray setting. Heavy watering washes seeds away or buries them too deep.

7. Keep the surface moist. Lettuce germination is sensitive to drying out in the first 5–10 days. In hot weather, this may mean watering twice daily until sprouts appear.

Germination temperature matters

If soil temperature is above 75°F at planting time, germination rate drops and the window for successful establishment shrinks. For fall planting, this is often the challenge in Zones 7–8: soil is warm in late August when seeds need to go in.

Solution for warm soil: Pre-sprout seeds indoors on a moist paper towel at room temperature for 2–3 days, then transfer to the bed once the seed coat cracks and a small root emerges. Pre-sprouted seeds germinate faster in warm soil.

Starting transplants indoors

For head lettuce types needing 65–80 days to maturity, starting transplants indoors 3–4 weeks before outdoor planting time gives you a head start.

• Fill seed trays or cell packs with moist seed-starting mix
• Press 2–3 seeds per cell onto the surface without covering
• Place under grow lights or in a south-facing window
• Thin to 1 seedling per cell once they emerge
• Transplant when plants have 3–4 true leaves

Harden off transplants for 7–10 days before moving them to the garden—set them outside in a sheltered spot for increasing hours each day to acclimate to outdoor light intensity and temperature swings.

Spacing guidelines

Spacing determines yield, airflow, and harvest method.

Thinning: Plant thicker than final spacing and thin as seedlings establish. Thin loose-leaf to 6-inch spacing by snipping (not pulling) small seedlings at soil level. Pulled seedlings disturb neighboring roots.

You can eat the thinnings—they’re the same as microgreens or baby salad greens and taste mild. Don’t waste them.

Watering

Lettuce needs consistent moisture—not wet, not dry.

The ideal: soil stays moist 2–3 inches deep at all times during germination and early growth. Once plants are established with 5–6 true leaves, allow the top inch to dry slightly between waterings.

Watering frequency:

• Spring: every 2–3 days in most US climates
• Fall: every 3–4 days as temperatures cool
• Summer (if pushing the season): daily in heat above 85°F

Lettuce is about 95% water. Drought stress causes bitter flavor immediately and irreversibly—once a lettuce plant experiences significant water stress, the leaves turn bitter even if watering resumes. Water consistently from day one.

Mulch helps. A 2-inch layer of straw or shredded leaves around lettuce plants conserves moisture and keeps roots cooler. In Zone 7–8 fall gardens, mulch is particularly useful for extending the harvest window into cooler months.

Fertilizing

Lettuce is a fast, leafy crop that benefits from nitrogen. Prepare beds with compost before planting and the nitrogen it provides typically covers the whole crop cycle.

If plants show slow growth or pale, yellowish leaves 3 weeks after germination, apply a balanced liquid fertilizer at half the package rate (fish emulsion or balanced liquid at 5-10-5 ratio works well).

Do not fertilize with high nitrogen after the 4-week mark—late-season nitrogen pushes soft leaf growth that is more susceptible to tip burn (calcium deficiency) and mildew.

Managing heat and bolting

The biggest challenge with lettuce in US gardens is the transition from spring to summer. Once temperatures consistently exceed 75°F, lettuce begins to bolt (sending up a flower stalk) and turns bitter.

Signs of bolting:

• Center of the plant elongates vertically
• Leaves become smaller and more pointed
• Flavor turns bitter almost overnight

What to do when you see bolting starting:

1. Harvest everything immediately—the outer leaves are still usable
2. Do not water more; it won’t help
3. Remove the plant once harvested to make room for a heat-tolerant crop

To delay bolting:

• Use shade cloth reducing light by 30% when daytime temps regularly exceed 75°F
• Choose heat-tolerant varieties for late spring: ‘Nevada,’ ‘Jericho,’ ‘Sierra,’ and ‘Oakleaf’ all tolerate more heat than standard varieties
• Mulch soil to keep root zone cooler
• Plant in a slightly shadier spot than ideal—4–5 hours of direct sun is enough for lettuce, unlike tomatoes

For companion planting combinations that work well with lettuce in raised beds, our lettuce companion plants guide covers which crops improve lettuce growth and which to avoid.

Succession planting

One planting of lettuce doesn’t last the season. But successive small plantings extend the harvest from late winter through fall in most US zones.

How to succession plant:

• Sow a new small row or block every 2–3 weeks
• Start new plantings while the previous one is producing
• Stop succession planting when temperatures are projected to exceed 80°F consistently for more than 2 weeks—shift to fall planting instead

A 4-foot row of loose-leaf lettuce yields 5–10 mature plants. Plant 3–4 rows, staggered 2 weeks apart, for a continuous harvest rather than a simultaneous large harvest that overwhelms a household.

Harvesting lettuce

Loose-leaf: Begin harvesting outer leaves when they’re 3–4 inches long. Cut outer leaves at the base, leaving the inner growth point intact. The plant produces new leaves for 4–6 weeks of continuous cutting before it bolts or declines.

Head types (butterhead, romaine): Harvest when the head feels firm and compact. For butterhead, squeeze the center gently—a firm center means it’s ready. Cut the head at soil level with a sharp knife. The root may produce a small second flush of leaves if left in place.

Baby leaf: Cut across the entire planting at 1 inch above soil level when leaves reach 3–4 inches tall. The root zone will regrow for 1–2 additional cuts before productivity drops.

Harvest in the morning when leaves are fully hydrated for the best flavor and shelf life. Store unwashed in a sealed bag in the refrigerator for up to 5 days.

Lettuce in raised beds and containers

Lettuce is one of the most productive container crops in US gardens. It grows well in 6–8 inch deep containers, window boxes, and shallow raised beds.

For containers: use a good potting mix (not garden soil), water more frequently than in-ground beds (containers dry out faster), and position in a spot with morning sun and afternoon shade in summer.

For raised beds, lettuce is a natural edge or border crop—plant it along the south edge of beds where it won’t be shaded by taller crops but can receive slight afternoon shade from taller neighbors in midsummer. For complete raised bed spacing and layout guidance, our garden layout planner guide covers how to position lettuce relative to other crops by season.

The Old Farmer’s Almanac lettuce growing guide provides companion planting, specific variety recommendations by region, and a planting calculator based on zip code—a useful supplement to the timing guidelines in this article.