- Hardiness Zone: 2-11 Annual
- Romain Cimmaron Lettuce Microgreens Grow As Microgreens -
Seed Depth: ¼ inch
Seed Spacing: 1 inch
Row Spacing: 12–18 inches
Sunlight: Full sun to partial shade
Days to Sprout: 7–14 days
Days to Maturity: 55–65 days
Growth Habit: Upright, romaine-type head
Sunlight: Prefers full sun in cooler weather; provide partial shade in warm climates to reduce bolting.
Soil Type: Loose, well-drained soil rich in organic matter. pH between 6.0–7.0 is ideal.
When to Plant: Sow outdoors 2–4 weeks before your last expected frost. For fall harvests, sow again in late summer.
Direct Sowing: Sow seeds ¼ inch deep and 1 inch apart in rows. Thin to 6–10 inches once seedlings are established.
Transplanting: Start indoors 3–4 weeks before your planting date. Transplant when seedlings have 3–4 true leaves, spacing 6–10 inches apart.
Succession Planting: Sow every 2–3 weeks for a continuous harvest through spring and fall.
Watering: Keep soil consistently moist but not soggy. Water at the base to avoid wetting the leaves and reduce the risk of disease.
Fertilizing: Apply a balanced, nitrogen-rich fertilizer once or twice during the growing season for lush, leafy growth.
Pruning: Harvest outer leaves regularly to encourage continued production and prevent bolting.
Pest and Disease Control: Use row covers to deter aphids and flea beetles. Space plants for airflow to prevent mildew and rot.
When to Harvest: Harvest outer leaves when they reach 4–6 inches long, or cut the entire head when it feels firm and mature, around 55–65 days.
How to Harvest: Use clean scissors or garden shears to cut leaves just above the base. For full heads, cut at the base of the plant.
Storing Fresh Lettuce: Rinse gently, pat dry, and store in a sealed container or produce bag in the refrigerator for up to 7–10 days.
Let Plants Fully Mature: Allow a few lettuce plants to bolt and produce tall flower stalks.
Collect Seeds When Dry: Wait until seed heads turn brown and fluffy, then carefully snip and collect them.
Clean and Sort: Separate seeds from the chaff by rubbing gently and using a fine mesh screen or sieve.
Dry Thoroughly: Ensure seeds are completely dry before storing to prevent mold or rot.
Label and Store: Place seeds in a paper envelope labeled with the variety name and year harvested.
Store in a Cool, Dry Place: Keep seeds in a sealed container away from heat, light, and moisture to maintain viability
Why You’ll Love It
Bold, Rich Color: Bronze-red leaves add beauty to garden beds and salad bowls.
Heat Tolerant: Stands up to warmer temps longer than most lettuces.
Crisp Texture: Firm and juicy like classic romaine.
Cut-and-Come-Again: Harvest outer leaves for a steady supply over time.
Plant Characteristics
Height: 8–12 inches
Growth Habit: Upright, romaine-type head
Leaf Type: Bronze-red outer leaves with crisp green centers
Days to Maturity: 55–65 days
Hardiness: Hardy annual
Flavor and Culinary Uses
Flavor: Mild and sweet with a crunchy romaine-style bite
Culinary Uses: Ideal for fresh salads, lettuce wraps, sandwiches, and grilled hearts
Companion Planting Tips
Good Companions: Carrots, radishes, cucumbers, and marigolds
Avoid Planting Near: Cabbage or brassicas (can compete for nutrients)
Bonus Benefit: Grows well in partial shade, extending your harvest into summer
Common Issues and Solutions
Bolting in Heat: Harvest regularly and provide shade during hot spells
Bitter Flavor: Pick before plants bolt or become overly mature
Pests: Use row covers to protect from aphids and flea beetles
Seeds Per Packet
1g | Approximately 885 |
3g | Approximately 2,655 |
Why You’ll Love It
Bold, Rich Color: Bronze-red leaves add beauty to garden beds and salad bowls.
Heat Tolerant: Stands up to warmer temps longer than most lettuces.
Crisp Texture: Firm and juicy like classic romaine.
Cut-and-Come-Again: Harvest outer leaves for a steady supply over time.
Plant Characteristics
Height: 8–12 inches
Growth Habit: Upright, romaine-type head
Leaf Type: Bronze-red outer leaves with crisp green centers
Days to Maturity: 55–65 days
Hardiness: Hardy annual
Flavor and Culinary Uses
Flavor: Mild and sweet with a crunchy romaine-style bite
Culinary Uses: Ideal for fresh salads, lettuce wraps, sandwiches, and grilled hearts
Companion Planting Tips
Good Companions: Carrots, radishes, cucumbers, and marigolds
Avoid Planting Near: Cabbage or brassicas (can compete for nutrients)
Bonus Benefit: Grows well in partial shade, extending your harvest into summer
Common Issues and Solutions
Bolting in Heat: Harvest regularly and provide shade during hot spells
Bitter Flavor: Pick before plants bolt or become overly mature
Pests: Use row covers to protect from aphids and flea beetles
Seeds Per Packet
1g | Approximately 885 |
3g | Approximately 2,655 |
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