Lettuce Little Gem (Cos)

Lettuce 'Little Gem' Seeds A compact cos with a densely packed, pale heart of exceptional flavour. Ready in six weeks, perfect for every occasion, and a genuine improvement on anything the supermarket sells. If there is one lettuce that has earned a permanent place on the British kitchen garden list, it is Little Gem. Compact, upright, and unmistakably neat, each plant produces a small but perfectly structured head — firm outer leaves of rich emerald green giving way to a tightly packed, pale golden-white heart of extraordinary crispness and sweetness. That heart is the point of the whole exercise: dense, cool, and lightly sugary, it is entirely unlike the soft inner leaves of a butterhead, and it is the reason Little Gem has been the lettuce of choice for discerning home growers for generations. Little Gem sits at the intersection of the cos and butterhead types — it has the upright, structured habit of a romaine with the compact, manageable size of a miniature butterhead — and it benefits from the best qualities of both. It is considerably more bolt-resistant than butterhead varieties, holds its quality in the ground for longer, and travels from garden to kitchen without wilting in the way that softer lettuces do. Grow it in a raised bed, a large container, or tucked in rows between herbs and flowers in the potager — it is one of the most effortlessly productive and genuinely delicious crops in the entire kitchen garden catalogue. 🌿 Understanding the Plant Lactuca sativa 'Little Gem' is a Hardy Annual classified as a semi-cos or romaine type, occupying the space between the soft butterhead and the tall, upright cos lettuce. It produces a small, tightly folded head of notably firm, crisp leaves with a sweet, clean flavour and a characteristic pale, densely packed heart that is one of the finest textures in the summer salad bowl — cool, crunchy, and lightly sweet in a way that no other lettuce quite replicates. The Cos Advantage: Unlike butterhead lettuces, which produce soft, delicate leaves that wilt quickly after harvest, cos and semi-cos types like Little Gem have a higher water content locked inside firmer cell walls — which is why the leaves stay crisp and fresh for considerably longer after picking. A Little Gem harvested whole and kept in the fridge will hold its quality for two to three days; a butterhead barely manages one. For households that cannot always eat everything on the day of harvest, this resilience is a genuine practical advantage. The Sweet Heart: The most prized part of Little Gem is the blanched, tightly packed central heart — formed as the outer leaves fold inward and exclude light from the inner growth, causing the leaves to develop without chlorophyll, producing the characteristic pale gold colour and exceptionally sweet, almost nutty flavour. The heart leaves are tender enough to eat whole, and their sweetness is the quality that makes Little Gem outstanding in a Caesar salad, braised briefly with butter and stock, or simply dressed with anchovy and lemon. Bolt Resistance: Little Gem is meaningfully more bolt-resistant than butterhead varieties — its upright, compact structure and thicker leaves help it cope better with warm and dry conditions without running to seed prematurely. This makes it a more reliable choice for summer growing than softer lettuces, and extends the window during which each sowing remains harvestable in good condition. Even so, succession sowing every three weeks remains the best practice for a continuous, uninterrupted supply. 🌱 Growing Guide Little Gem is one of the most reliable and straightforward lettuces to grow from seed — fast-germinating, adaptable, and considerably more tolerant of variable summer conditions than softer varieties. How to Sow: Sow indoors from February to March for the earliest spring crops, or direct outdoors from March to August. For outdoor sowings, sow thinly into shallow drills approximately 5mm deep and 25–30cm apart. Thin seedlings to 20cm apart once large enough to handle — the thinnings are entirely edible. For indoor sowings, use module trays and transplant at 3–4 weeks when seedlings are sturdy and well-rooted. Germination is fast and reliable — typically 5–8 days in mild conditions. As with all lettuces, avoid sowing when soil or compost temperature exceeds 25°C, as germination will be inhibited — a cool spot for the first 24–48 hours resolves this for midsummer sowings. Where to Grow: Little Gem thrives in full sun or partial shade and performs well in raised beds, large containers, and growing bags. It prefers consistently moist, fertile, well-drained soil or compost. Its upright, compact habit means it can be planted at slightly higher densities than loose-leaf types without crowding — 20cm spacings produce well-formed heads of excellent quality. In summer, light afternoon shade keeps the hearts sweet and delays bolting. Ongoing Care: Water consistently and evenly — irregular watering causes tip-burn on the inner leaves and promotes premature bolting. A light liquid feed every two weeks encourages dense, flavoursome growth. Slugs and snails are the main threat to young plants — copper tape around containers or organic slug pellets around outdoor rows provide effective protection. Little Gem's upright habit means the outer leaves rarely sit on damp soil, which significantly reduces the risk of bottom rot compared with flat-growing butterhead varieties. Harvesting: Harvest whole heads when they are firm and dense to a gentle squeeze but before the centre begins to elongate upwards — the sign of imminent bolting. Cut at the base with a sharp knife. Unlike loose-leaf lettuces, Little Gem does not readily regrow after cutting, so plan successions accordingly. Heads harvested in the morning, when cool and fully turgid, keep their quality significantly longer than those cut during the heat of the day. 📋 Plant Specifications Botanical Name Lactuca sativa 'Little Gem' Common Name Little Gem / Mini Cos / Semi-Cos Lettuce Plant Type Hardy Annual Hardiness H4 — Hardy; tolerates light frosts, particularly under cover Light Requirements Full Sun / Partial Shade ⛅ Head Size Compact — approximately 15–20cm tall; small but densely packed Plant Spacing 20cm apart; rows 25–30cm apart Sowing Method Direct sow outdoors or sow indoors and transplant Days to First Harvest Approximately 45–60 days from sowing Harvest Period April to November (year-round under cover) Flavour Profile Sweet, clean, and crisp — pale, blanched heart with outstanding texture Bolt Resistance Good — more reliable in warm conditions than butterhead types Seeds per Packet Approximately 800 seeds Perfect For 🥗Caesar Salads & Classic Dressings 🪴Raised Beds, Pots & Containers 🔄Succession Sowing All Season 🌿Cottage Potager & Edible Borders ❄️Early Spring & Autumn Harvests 🤝 Beautiful Garden Combinations Little Gem's neat, upright heads and rich emerald colouring make it one of the most satisfying lettuces to grow in an ornamental kitchen garden — and these companions from our range benefit the crop beautifully: 🧡 Calendula 'Art Shades Mixed': The Potager Pairing. The warm apricot and cream tones of Art Shades Calendula alongside the cool, deep emerald of Little Gem heads creates one of the most naturally beautiful colour combinations in the productive garden — warm and cool, soft and structured, playing against each other in a way that looks entirely at home in a cottage potager. As a companion, Calendula delivers consistent practical benefit alongside the aesthetics: its flowers sustain aphid-eating hoverflies throughout the season, its roots deter soil pests, and its fully edible blooms make a spectacular garnish scattered over a dressed Little Gem salad. 🌼 Borage: The Aromatic Protector. Borage has long been associated with lettuce as a beneficial companion — its strong aromatic foliage is traditionally held to deter aphids, and its deep taproot draws nutrients upward from lower soil layers that benefit the shallow-rooted lettuce alongside it. The visual contrast of Borage's loose, rough-textured habit with the neat, upright structure of Little Gem heads is genuinely appealing in a mixed potager planting. And the electric-blue edible flowers scattered over a Little Gem Caesar salad are one of the simplest and most beautiful garnishes in the kitchen garden. 🌼 Nasturtium 'Tom Thumb': The Edible Edging. Compact Nasturtiums make an ideal low-growing edging alongside rows of Little Gem — their vivid orange and red flowers bring warmth and movement to the cool green of the lettuce bed, their peppery foliage deters aphids and slugs from the developing heads, and every part of both plants ends up on the same plate. A Little Gem salad with Nasturtium flowers, torn leaves, and a mustardy dressing is one of the most immediately satisfying things the kitchen garden can produce in early summer. 🌿 Basil Classic Italian: The Classic Kitchen Garden. Basil planted near lettuce is a traditional kitchen garden combination with genuine practical value — its aromatic oils are believed to deter the aphids and caterpillars that target salad crops, and its warm, heady scent creates a richly sensory atmosphere in the productive garden through the summer months. On the plate, Little Gem and fresh basil belong together as naturally as any classic combination the kitchen produces — whether in a simple salad with olive oil and lemon, alongside grilled fish, or in the finest version of a Caesar dressing you have ever made. 📅 Sowing & Harvesting Calendar Sow indoors from February for the earliest crops, then direct outdoors from March through to August — making a fresh sowing every three weeks for perfectly timed, crisp Little Gem heads from April right through to November. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 🌱 Sow Indoors 🌿 Sow Outdoors 🥗 Harvest Sow Indoors Sow Outdoors Harvest Not active ✨ Succession & Harvest Tip Unlike a cut-and-come-again lettuce, Little Gem is harvested whole — which means succession sowing is essential for a continuous supply. A new sowing every three weeks from March through to August will give you a steady, unbroken run of heads from April right through to November. Because Little Gem holds its quality in the ground for longer than softer butterhead varieties, you have a more forgiving harvest window — typically ten days to two weeks between the point of perfect ripeness and bolting. Always check heads for firmness with a gentle squeeze rather than relying on size alone, and harvest in the morning for the crispest, coolest hearts. An August sowing will produce the finest, most tightly packed, sweetest heads of the entire year. 🏆 Britain's Best-Loved Compact Cos Lactuca sativa 'Little Gem' has been a cornerstone of the British kitchen garden for generations — and it has held that position through consistent, reliable excellence rather than novelty. The combination of sweet, crisp flavour, compact size, good bolt resistance, and genuine versatility from raised bed to window box to cottage border makes it one of the most rewarding and practical lettuces you can grow from seed. Sow it once and it will earn its place in your kitchen garden every single season thereafter.