Lettuce Seeds,
Flashy Butter Gem

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.'

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.

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​.

• 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.