Planting Timeline
Showing dates for Little Gem in USDA Zone 7
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Little Gem · Zones 3–9
Growing Details
Zone-by-Zone Planting Calendar
| Zone | Indoor Start | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 3 | — | — | April – August | June – October |
| Zone 4 | — | — | April – August | June – November |
| Zone 5 | — | — | March – August | May – November |
| Zone 6 | — | — | March – September | May – December |
| Zone 7 | — | — | March – September | May – December |
| Zone 8 | — | — | February – October | April – January |
| Zone 9 | — | — | January – November | March – February |
Complete Growing Guide
Start preparing your Little Gem lettuce bed in early spring when soil temperatures reach 35-45°F. Work in 2-3 inches of compost or well-aged manure, as Little Gem thrives in rich, moisture-retentive soil with a pH between 6.0-7.0. Unlike larger lettuce varieties, Little Gem's compact size allows you to space plants just 6-8 inches apart in rows 10 inches apart.
For your first spring crop, direct sow seeds ¼ inch deep when daytime temperatures consistently stay below 75°F. In zones 3-6, this typically means mid-March to early April. In warmer zones 7-9, aim for late February to mid-March. Little Gem's excellent bolt resistance gives you a longer harvest window than most lettuce varieties, but avoid planting during peak summer heat.
To extend your harvest season, succession plant every 2-3 weeks through late spring, then resume in late summer 10-12 weeks before your first hard frost. For fall crops in hot climates, start seeds indoors in air conditioning during August heat, then transplant when outdoor temperatures drop below 80°F.
Fertilize with a balanced 10-10-10 fertilizer at planting, then side-dress with nitrogen-rich amendments like blood meal or fish emulsion every 3 weeks. Little Gem is a fast grower and depletes soil nitrogen quickly. Maintain consistent soil moisture—aim for 1 inch weekly, including rainfall.
Avoid these common mistakes: overcrowding (which promotes disease), overhead watering late in the day (causes tip burn), and harvesting too late when heads become bitter. The key to perfect Little Gem is timing—these mini heads go from perfect to past-prime quickly.
In containers, use pots at least 8 inches deep with excellent drainage. Little Gem's shallow root system makes it ideal for window boxes and small-space gardens, requiring less soil depth than full-sized romaine varieties.
Harvesting
Harvest Little Gem when heads reach 4-6 inches tall and feel firm when gently squeezed at the base. The outer leaves should be deep green with crisp texture, while the center remains tightly closed and pale yellow-green. This typically occurs 55-65 days from seed, but cool weather can extend this timeline.
Perform the 'squeeze test'—a ready head feels solid and compact, not loose or spongy. Harvest in early morning when leaves are fully hydrated and crisp from cool overnight temperatures. Use a sharp knife to cut the entire head at soil level, leaving roots intact.
Don't wait for Little Gem to reach full romaine size—these are meant to be harvested small. Once the center begins to elongate or outer leaves start spreading wide, bitterness develops rapidly. Unlike cut-and-come-again varieties, Little Gem is typically harvested as a complete head, though you can harvest outer leaves gradually if needed, allowing the center to continue developing for 1-2 additional weeks.
Storage & Preservation
Store unwashed Little Gem heads in the refrigerator wrapped in damp paper towels inside perforated plastic bags. Properly stored heads maintain quality for 7-10 days, significantly longer than loose-leaf varieties. Keep at 32-36°F with high humidity—your crisper drawer is ideal.
For immediate use, place cut stems in cold water like flowers to maintain crispness. Little Gem's compact heads make excellent individual serving portions, so consider harvesting just what you need rather than storing long-term.
While not typically preserved through traditional methods, Little Gem can be quickly blanched and frozen for cooked applications, though texture suffers for fresh use. The variety's quick-cooking nature makes it better suited for immediate consumption. For longer-term storage, focus on succession planting rather than preservation—plant new crops every 2-3 weeks for continuous fresh harvests throughout the growing season.
History & Origin
Little Gem lettuce originated in Britain during the late 19th century, developing as a natural selection from traditional romaine varieties grown in English kitchen gardens. British gardeners selected for smaller, more compact heads that could mature quickly in their shorter growing seasons and provide individual serving sizes for smaller households.
The variety gained popularity in French cuisine during the early 1900s, where it became known as 'Sucrine' and was prized for grilling and braising applications. French chefs appreciated its ability to hold together when cooked, unlike loose-leaf varieties that wilted immediately.
Little Gem experienced a resurgence in American gardens during the 1990s gourmet cooking movement, when home gardeners began seeking restaurant-quality ingredients. Its compact size perfectly matched the trend toward smaller gardens and container growing in urban environments.
Today, Little Gem represents the perfect intersection of traditional breeding and modern gardening needs—an heirloom variety that delivers on both flavor and practicality. Seed companies maintain true-to-type genetics, ensuring modern gardeners can grow the same compact, sweet lettuce that graced Victorian garden tables over a century ago.
Advantages
- +Exceptional bolt resistance allows extended spring harvests even when temperatures reach 80°F
- +Perfect individual serving size eliminates waste from oversized lettuce heads
- +Compact 6-8 inch spacing allows 40% more plants per square foot than traditional romaine
- +Sturdy leaves hold up to grilling and warm preparations without wilting immediately
- +Quick 55-65 day maturity enables multiple succession crops per season
- +Natural portion control makes meal planning and preparation more efficient
- +Strong root system provides good drought tolerance once established
Considerations
- -Narrow harvest window of 7-10 days before quality declines rapidly
- -Higher per-pound seed cost compared to loose-leaf varieties due to specialized breeding
- -Susceptible to tip burn in hot, humid conditions with inconsistent watering
- -Limited regrowth potential after harvest unlike cut-and-come-again types
- -Small head size may not satisfy households accustomed to full-size lettuce portions
Companion Plants
Plant Together
Chives
Repels aphids and improves lettuce flavor
Carrots
Deep roots don't compete with shallow lettuce roots, loosens soil
Radishes
Quick growth breaks up soil for lettuce, deters leaf miners
Marigolds
Repels aphids, whiteflies, and nematodes
Spinach
Similar growing requirements, efficient use of garden space
Garlic
Natural pest deterrent, repels aphids and slugs
Dill
Attracts beneficial insects that control lettuce pests
Nasturtiums
Acts as trap crop for aphids and cucumber beetles
Keep Apart
Sunflowers
Too tall, creates excessive shade that stunts lettuce growth
Brassicas
Compete for similar nutrients and can attract shared pests like flea beetles
Fennel
Releases allelopathic compounds that inhibit lettuce growth
Pests & Disease Resistance
Resistance
Good bolt resistance, moderate disease tolerance
Common Pests
Aphids, slugs, cutworms, flea beetles
Diseases
Downy mildew, lettuce drop, tip burn