Garnet Butter Gem Lettuce

 Lactuca sativa 

Seeds per packet ~ 100

Germination 82% Oct 2025 Packed for 2026

Origins and History

Lettuce (Lactuca sativa) was domesticated from wild lettuces in the Mediterranean/West Asian region and, over centuries, diversified into recognizable “types” (butterhead, romaine/cos, crisphead, looseleaf) through farmer selection for leaf texture, head shape, and bolt resistance. Garnet Butter Gem is a modern open-pollinated “gem”-style butterhead with romaine-like upright form, selected and named by plant breeder Frank Morton; it’s grown today like an heirloom because it’s stable, seed-savable, and widely shared through seed catalogs and seed-saver networks.

Appearance and Characteristics

Garnet Butter Gem forms compact, tight, uniform rosettes (often described as about a foot wide and under a foot tall) held upright for a clean harvest. Leaves are attractively “pebbled,” shaded garnet/red and light plum with touches of brown over a green base, and the eating quality is notably sweet, crisp, and buttery. It’s also praised for improved bolt tolerance and for heads that “hold” well as they tighten.

Culinary Uses

This is a “personal-size” head lettuce that shines in fresh salads where you want both color and a tender bite. Use whole leaves as edible cups for chicken salad, beans, or roasted vegetables; halve heads for composed plates; or layer into sandwiches for a sweet crunch without the toughness of older romaine. Its mild sweetness pairs especially well with citrus, vinaigrettes, herbs, nuts, and creamy dressings.

Growing Tips

Like most lettuces, Garnet Butter Gem performs best in cool weather: aim for spring and fall plantings, steady moisture, and fertile, well-drained soil. For the most tender heads, keep growth moving (consistent watering, light side-dressing of nitrogen, and mulch to moderate soil temperature). If you’re pushing into warmer periods, give afternoon shade and harvest promptly—bolt resistance helps, but heat and long days will still speed flowering. Typical spacing for butterhead-style lettuces is about 10–12 inches between plants to allow heads to size up evenly.

Sow Depth

Sow lettuce seed very shallow because it needs light to germinate: press seed into the surface and cover no more than ⅛ inch (or simply “dust” with fine soil/vermiculite). Keep the seedbed evenly moist until emergence.

Harvesting Guidance

Harvest as baby leaf by snipping outer leaves young, or let plants form tight rosettes and cut the whole head at the base once it feels firm and full. For best flavor and texture, harvest in the cool of the morning, chill quickly, and keep leaves dry and cold until use. Garnet Butter Gem is commonly listed at around 48 days to maturity from emergence (faster for baby leaf).