Flashy Butter Gem Lettuce in decorated red bowl on a white background.
Flashy Butter Gem Lettuce leaves on a pewter plate with a fork on a dark background.
Gardener holding a freshly cut head of Flashy Butter Gem Lettuce in the trial garden at Baker Creek.
A head of Flashy Butter Gem Lettuce in the garden.
Flashy Butter Gem Lettuce in decorated red bowl on a white background.
Flashy Butter Gem Lettuce leaves on a pewter plate with a fork on a dark background.
Gardener holding a freshly cut head of Flashy Butter Gem Lettuce in the trial garden at Baker Creek.
A head of Flashy Butter Gem Lettuce in the garden.

Lettuce Seeds,
Flashy Butter Gem

4.813 ReviewsSKU: #LT160Min. seed count: 250
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Description

(Lactuca sativa) Cos. Nearly full-sized romaine type dappled in a lovely, deep crimson. Another "Flashy" introduction from Frank Morton, this one is a high yielder, and also makes a great early baby romaine. Very tender and delicious!

Growing Tips: Flashy Butter Gem lettuce is a versatile, cold-tolerant variety with a sweet, buttery texture and red speckles. For best results, plant in well-drained, fertile soil enriched with compost. The optimal soil pH ranges from 6.0 to 6.8. This lettuce prefers full sun but can tolerate partial shade, especially in warmer climates. Consistent watering is crucial; keep the soil moist but not waterlogged to prevent root rot. Mulching helps maintain soil moisture and temperature.

Plant Details

Botanical Name
Lactuca sativa
Life Cycle
Annual
Sun Requirement
4–8 hr.
Days to Germinate
7–10
Days to Maturity
70
Planting Depth
¼ in.
Plant Spacing
8 in.
Ideal Temperature
60–80°F
Frost Hardy
Yes

When to Grow

Flashy Butter Gem lettuce can be planted in early spring or late summer for fall harvests. It matures in about 30 days for baby leaves and 70 days for full heads. This variety does well in USDA zones 3-9, and thrives in temperatures between 60-80 F. In milder climates, you can grow it throughout autumn and winter. For precise planting times, refer to local frost date charts​. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

How to Sow and Plant

Sow seeds 1/4 inch deep in seed trays with a quality seed-starting mix to start indoors or directly sow outside in well-prepared soil. Sow in thick bands for baby greens or space farther apart, about 8 inches, for head lettuce. Keep the soil moist until germination occurs. If starting indoors, harden off seedlings by gradually exposing them to outdoor conditions over a week before transplanting them to their permanent location.

How to Grow

Maintain consistent moisture in the soil without overwatering. Water at the base of the plants to prevent the leaves from getting wet, reducing the risk of diseases like downy mildew. Fertilize with a balanced fertilizer rich in nitrogen to support leafy growth. Regularly monitor for pests such as aphids and caterpillars, and use organic pesticides if necessary. Thin plants to avoid overcrowding and promote air circulation​.

How to Save Seeds

  • Lettuce is a self-pollinating annual, making it an easy crop for seed saving.
  • Choose the best and healthiest plants and allow them to send up flower stalks.
  • Once seed heads are dried and have turned a yellowish-tan color, cut the entire stalk and place in a bag.
  • Crush the seed heads in the bag and separate the chaff.
  • Store in an airtight container in the refrigerator for up to 4 years.

FAQ

When should I plant Flashy Butter Gem lettuce?

Plant in early spring or late summer for fall harvests. In milder climates, it can be grown throughout autumn and winter.

How do I prevent bolting in Flashy Butter Gem lettuce?

To prevent bolting, provide partial shade during hot weather, keep the soil consistently moist, and avoid exposing the plants to high temperatures for extended periods.

What are common pests for lettuce and how can I control them?

Common pests include aphids, slugs, and caterpillars. Control aphids with insecticidal soap or neem oil, use beer traps or copper barriers for slugs, and handpick caterpillars or use Bacillus thuringiensis (Bt) as a biological control.

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