Growing Lettuce: A Complete Profile
By Growing Home Greens Team · July 16, 2026
If you want a first-garden success story in under six weeks, lettuce is it. It germinates reliably, tolerates a light frost, and, unlike a lot of vegetables. You can harvest outer leaves gradually instead of waiting for one big harvest day.
A cool-season crop through and through
Lettuce is a cool-season crop through and through. It grows best in the mild weeks of spring and fall, and it bolts (sends up a bitter flower stalk) once daytime temperatures push into the 80s. Succession planting (sowing a new small batch every couple weeks) keeps a steady supply going instead of one big flush that bolts all at once.
Bitterness means it bolted, not a soil problem
Bitterness almost always means the plant bolted from heat stress, not a soil problem. If your season’s warming up fast, plant in a spot that gets afternoon shade to buy a few extra weeks.
The densest filler in the grid
Lettuce is a great “filler” crop, its shallow roots don’t compete with deeper-rooted neighbors like carrots or tomatoes, which is why it shows up so often as a companion. See the full companion guide for lettuce, and note it’s one of the highest-density plants in the Garden Designer’s square-foot grid: four plants per square foot.
Companion planting guide for Lettuce · Find your planting dates
Typically viable in USDA zones 2-10. Not sure your zone? Look it up by ZIP code.
Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Lettuce tolerates either.
See exact start-indoors, direct-sow, and harvest dates for your zone →
How many Lettuce plants fit per square foot?
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 0.5-1 ft.
Soil & water: pH 6-6.5. well-drained. Amend with lime if soil pH falls below 6.
Varieties worth considering
- Slobolt: Seed Savers Exchange describes it as very slow to bolt, producing leaves all summer long, a good pick for hot climates or late-spring plantings. (source)
- Summertime (crisphead): Seed Savers Exchange notes it tolerates heat and resists bolting, another hot-climate option. (source)
- Winter Density (Bibb-Romaine): Seed Savers Exchange describes this as slow to bolt in summer heat while also cold tolerant, a rare combination that spans both ends of lettuce's growing season instead of covering just the hot-weather half like Slobolt and Summertime. (source)
- Buttercrunch (best for: classic butterhead): Johnny's grows this Cornell-bred 1963 AAS winner into a small, tightly bunched 6-inch rosette with crisp, sweet leaves and compact hearts that blanch yellow inside. Ready in about 46 days, the classic butterhead most people picture when they think of Bibb lettuce. (source)
- Black Seeded Simpson (best for: fast, easy leaf lettuce): True Leaf Market lists this heirloom leaf type at 40-49 days with vibrant green, curled leaves in a mounded, headless habit, the loose-leaf counterpart to Buttercrunch's tight head. One of the most widely grown leaf lettuces for over 150 years, an easy first lettuce for a new gardener. (source)
- Little Gem (best for: compact spaces, containers): Johnny's describes this French heirloom as a mini romaine-butterhead cross, about 40 days, heavily savoyed leaves with a buttery texture, quick to close and blanch its internal leaves. The smallest-footprint variety here, worth it for containers or a tight bed. (source)
Cited from the source shown next to each variety. We haven't grown these ourselves yet, so treat this as a research-backed starting point, not a personal endorsement.
Where to buy lettuce seeds
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See it growing
Search YouTube for "growing lettuce" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
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Growing Lettuce: The fastest, most forgiving crop for a first garden, and how to keep it from bolting in early summer heat.
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