• Cimmaron Romaine seeds – heirloom, non-GMO lettuce from Inherited Seeds
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Lettuce Romaine Cimmaron

Lettuce Romaine Cimmaron

$3.76 USD
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Cimmaron Romaine Lettuce · Heirloom · Open-Pollinated · Naturally Grown · Non-GMO · Slow to Bolt

Cimmaron is a striking red romaine with deep bronze-red outer leaves and crisp, sweet, green-tinged hearts. Said to date back to the 1700s, it's slow to bolt, tolerates cold well and gives you the crunch of romaine with extra color. Use it in Caesar salads, wraps or grilled romaine halves.

Why Grow Cimmaron Romaine?

  • Deep bronze-red romaine leaves
  • Crisp, sweet hearts
  • Slow to bolt; tolerates cold
  • Perfect for Caesar salads
  • Old-time heirloom

Plant Profile

Botanical Name: Lactuca sativa

Common Name: Cimmaron Romaine, Red Romaine

Type: Heirloom, open-pollinated

Crop: Romaine lettuce

Leaf Color: Deep bronze-red outside, green-tinged heart

Plant Habit: Upright romaine head, 10–12 in.

Season: Cool season; slow to bolt

Sun: Full sun to partial shade

Days to Harvest: 60–70 days; baby leaves from 30 days

Sowing Depth: 1/8 in.

Germination: 5–10 days at 45–75°F soil

Harvest: Cut whole heads or pick outer leaves

Garden Use: Raised beds, containers, cool-season rows

Culinary & Traditional Uses

Romaine is crisp and sturdy, perfect for dressing and grilling.

  • Caesar salad
  • Grilled romaine halves
  • Lettuce wraps
  • Sandwiches and burgers
  • Chopped salads
  • Garnish for kebabs and tacos

How to Grow

Romaine grows best in cool weather. Sow in spring and again in late summer.

  1. Sow outdoors 2–4 weeks before your last frost date, and again in late summer for fall.
  2. Sow seeds 1/8 in. deep; lettuce needs light, so barely cover it.
  3. Keep soil moist; seedlings appear in 5–10 days.
  4. Thin to 6–10 in. apart, depending on type. Eat the thinnings.
  5. Water regularly and mulch to keep roots cool.
  6. Give afternoon shade in warm weather to slow bolting.
  7. Sow a small batch every 2–3 weeks for a steady supply.

What NOT To Do

  • Don't bury seeds deeply
  • Don't let soil dry out, which causes bitterness
  • Don't sow in midsummer heat without shade
  • Don't harvest in the heat of the day; pick in the morning

Regional & International Names

  • Hindi: Salad Patta
  • Spanish: Lechuga
  • French: Laitue
  • Italian: Lattuga
  • English: Lettuce
  • English: Red Romaine, Cos

FAQ

Is Cimmaron cold-tolerant?
Yes. It handles cool nights and light frosts well.

Can I harvest leaves instead of whole heads?
Yes. Pick outer leaves and let the center keep growing.

Why is my romaine bitter?
Usually from heat or drought. Keep it watered and give afternoon shade.

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