Little Gem Lettuce Seeds
Little Gem settles the romaine-versus-butterhead argument by being both — a compact mini romaine with the upright crunch of a cos and the sweet, buttery tenderness of a Bibb, wrapped around a dense, blanched, creamy-yellow heart. Each head grows just 10–15 cm (4–6 in) tall, tight and glossy, which means one head is one dinner salad: no half-heads wilting in the crisper, no oversized rosette taking a month to fill out.
An English heirloom also sold as Sucrine or Sugar Cos, Little Gem earned its place on restaurant menus for that sweet, nutty heart and its single-serving size — halve it, dress it, and it holds its shape on the plate. It’s also more forgiving of warmth than most lettuces, keeping its sweetness a little deeper into summer before bolting, and its small footprint makes it the natural pick for containers, raised beds, and tight successions where a full-size head won’t fit.
🌍 Where Little Gem Lettuce Grows Best
🇺🇸 United States
A spring and fall crop through zones 3–9, and a winter grower in zones 9–11. Its above-average heat tolerance for a romaine buys extra weeks before summer bolting, so it pushes further into early summer than most across the Midwest, Northeast, and Pacific Northwest; in the Deep South, Texas, and the Southwest it’s a cool-season winter lettuce.
🇨🇦 Canada
Compact and quick, Little Gem is a strong fit for short northern seasons and small gardens across zones 2–9. Direct sow as soon as the ground is workable from the Prairies and Quebec to Ontario, the Maritimes, and coastal BC — its small heads mature fast — then sow again in mid-to-late August for a sweet fall crop.
🌱 Little Gem Lettuce at a Glance
Sow seeds
Surface to 6 mm (¼ in); light aids germination
Germination
7–10 days at 10–21°C (50–70°F)
Frost tolerance
To about -2°C (28°F)
Spacing
15–20 cm (6–8 in); double the density of full romaine
Head size
Dense; 10–15 cm (4–6 in) tall
Days to maturity
50–60 days
How to Grow Little Gem Lettuce Seeds
Little Gem lettuce seeds germinate in soil as cool as 4°C (40°F) but stall above 24°C (75°F), so direct sow 2–4 weeks before your last frost, or start indoors 4–6 weeks ahead in warm-summer regions. Barely cover the seed to 6 mm (¼ in) since it needs light to sprout. Because the heads stay small, you can thin to just 15 cm (6 in) apart — nearly double the density of a full-size romaine — fitting far more heads into the same bed.
For a steady run of single-serve heads, sow a fresh short row every 10–14 days through spring and again from late summer into fall. Little Gem takes heat better than most lettuces, but even moisture is what keeps the hearts sweet and holds off bolting, so water consistently and give afternoon shade above 27°C (80°F). In pots, grow two plants per 30 cm (12 in) container — the compact habit makes this one of the best lettuces for containers, raised beds, and small urban gardens.
🪴 Little Gem Made for Small Gardens
Containers & window boxes
Two heads per 30 cm (12 in) pot, at least 15 cm (6 in) deep — a balcony can grow a week of salads.
High-density beds
At 15 cm (6 in) spacing you fit roughly twice as many heads per row as full romaine, for more harvest from the same ground.
Tight succession
Fast, uniform heads make it easy to sow a small batch every couple of weeks and always have one salad’s worth ready to cut.
Harvesting & Storing Little Gem Lettuce
Cut the whole head at the base once it feels firm and full at 10–15 cm (4–6 in) tall, usually 50–60 days from sowing — that’s the classic single-serving harvest. If you’d rather keep the plant producing, take a few outer leaves at a time and leave at least half the head standing, and it will keep pushing new growth from the centre. Harvest in the cool of the morning, when the heads are crispest and highest in moisture.
Store whole heads unwashed in the crisper, where they keep 7–10 days thanks to the dense, tightly wrapped structure, or rinse and spin loose leaves and hold them in a towel inside a sealed bag for 5–7 days. Keep lettuce away from apples and bananas, whose ethylene gas speeds browning. If a heat wave threatens to bolt the plants, cut every head at once before a central stalk rises and the hearts turn bitter.
Using Little Gem Lettuce in the Kitchen
Little Gem is built to be served whole or halved — the dense heart holds together on the plate where a soft butterhead collapses. Halve a head lengthwise, brush the cut face with oil, and sear it cut-side down on a hot grill for a minute or two: the outer leaves char while the sweet heart caramelises, the move that made Little Gem a chef’s favourite. Off the grill it’s the perfect one-person Caesar or wedge, the leaves sturdy enough to scoop dressing and stand up to anchovy, parmesan, and crumbled bacon.
Raw, the crisp cos leaves and sweet, nutty heart carry hearty dressings without going limp — blue cheese, Caesar, tahini, or a sharp vinaigrette. Because each head is a single portion, Little Gem is ideal for composed plates and gem-leaf boats filled with grains, beans, or shrimp. The sweetness that intensifies over heat also makes the halved heads a quick side: a fast sear or broil and a squeeze of lemon is all they need.
Saving Little Gem Lettuce Seeds
Little Gem lettuce seeds are straightforward to save because this is an open-pollinated, largely self-pollinating heirloom that comes true to type. Let a few of your best heads bolt and flower fully; the small yellow daisy-like flowers ripen into fluffy white seed heads over one to two weeks. Once the tufts appear and the heads dry on the stalk, shake or rub the seed into a paper bag and winnow away the chaff.
Lettuce flowers self-fertilize before they fully open, so cross-pollination is rare and growing several varieties nearby generally won’t affect purity — a 3 m (10 ft) buffer between flowering plants is a sensible precaution if you’re keeping a strain pure. Store the cleaned seed cool, dry, and airtight, where it stays viable 3–4 years, and run a quick ten-seed germination test before committing a full planting to saved stock.
🥬 More Lettuce Varieties
Pair this mini romaine with full-size romaine, butterhead, and loose-leaf types for a season-long, full-texture salad garden.
Browse all lettuce seed varieties →
Is Little Gem lettuce a romaine or a butterhead?
Little Gem is both — a mini romaine (cos) that carries the succulent sweetness of a butterhead. The upright leaves give it romaine crunch, while the dense, blanched, creamy-yellow heart tastes sweet and nutty like a Bibb. That cross is exactly why it’s prized: cos structure and holding power with butterhead flavour, in a head small enough for one salad.
How big does Little Gem lettuce get?
Little Gem forms a compact, dense head just 10–15 cm (4–6 in) tall and about 10 cm (4 in) across — roughly a third the size of a full romaine. That petite size is the point: one head is a single dinner salad, so there’s no half-used head wilting in the fridge, and you can pack far more plants into a bed or pot.
Can you grill Little Gem lettuce?
Little Gem is one of the best lettuces for grilling. Halve a head lengthwise, brush the cut face with oil, and sear it cut-side down on a hot grill for a minute or two — the outer leaves char and the sweet heart caramelises. The dense heart is what makes it work: it holds together over heat where a loose or soft lettuce would collapse.
Is Little Gem good for containers and small gardens?
Little Gem is ideal for small spaces — grow two heads per 30 cm (12 in) pot at least 15 cm (6 in) deep, or space them just 15 cm (6 in) apart in a bed for nearly double the density of full romaine. The compact, upright habit suits containers, window boxes, raised beds, and hydroponic setups, making it a top choice for balconies and small urban gardens.
Does Little Gem lettuce tolerate heat?
Little Gem holds up in warmth better than most lettuces, keeping its sweetness a little deeper into summer before bolting — one reason cos types are favoured for late-spring sowings. It’s still a cool-season crop, though: above about 27°C (80°F) give it afternoon shade and consistent moisture, and harvest promptly, since sustained heat will eventually push any lettuce to bolt and turn bitter.
How long does Little Gem lettuce take to grow?
Little Gem matures in 50–60 days from sowing to a full, firm mini head, with baby leaves ready sooner if you want them. Seed germinates in 7–10 days in cool soil. Because the heads are small and uniform, the whole planting tends to finish together, which makes it easy to time short successions two weeks apart.
How far apart should I plant Little Gem lettuce?
Space Little Gem 15 cm (6 in) apart for compact heads, or up to 20 cm (8 in) for slightly larger ones — about half the spacing a full romaine needs. That tight spacing is a real advantage: you get roughly twice as many heads from the same row length, which suits high-density beds and small-space growing.
Can you eat Little Gem lettuce whole?
Serving Little Gem whole or halved is one of its main appeals. The head is small and dense enough to plate as a single portion — split it lengthwise for a mini wedge salad, separate the leaves into sturdy little boats for fillings, or grill the halves as a warm side. Each head is one serving, so nothing goes to waste.
Why is my Little Gem lettuce bolting or bitter?
Bolting and bitterness in Little Gem come from stress — heat, long days, or dry soil pushing the plant toward flowering, which builds bitter latex in the leaves. It resists this better than most lettuces, but grow it in cool weather, keep the soil evenly moist, shade it through hot afternoons, and harvest on time. Once a central stalk rises, cut the head and start a new succession.
Can I grow Little Gem lettuce indoors or hydroponically?
Little Gem grows well indoors under a full-spectrum LED light run 14–16 hours a day, and its compact, upright heads make it a standout for hydroponic and aerogarden systems. Lettuce doesn’t need high light intensity, so it’s one of the most practical crops for fresh winter salad — the small heads finish quickly and take up little space under lights.
One Perfect Head, One Perfect Salad
The chef’s-favourite mini romaine — romaine crunch, butterhead sweetness, and a dense heart that grills beautifully, all in a single-serving head.
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