Heirloom Seeds
Romaine Lettuce Seeds – Non-GMO Heirloom
by Organo Republic · United States
Buy directly from Organo Republic. Final price and availability confirmed at checkout.
Romaine lettuce ( Lactuca sativa ) grows tall, upright heads of crisp green leaves with sturdy ribs and a clean, sweet flavor. These romaine lettuce seeds produce the classic cos type that forms the backbone of a proper Caesar salad. It is a dependable,
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cold-hardy lettuce that delivers real crunch straight from the garden. Who it's for Ideal for gardeners who want a crisp, heat-tolerant lettuce with good structure, and for cooks who love romaine for salads, wraps, and grilling. How & when to plant Direct sow 2-4 weeks before your last spring frost, or start indoors 4 weeks earlier. Sow 1/4 inch deep and thin to 10-12 inches apart. Romaine likes full sun to part shade and cool weather, growing well in USDA zones 4-9. It tolerates heat better than many lettuces; keep soil evenly moist. Harvest Heads mature in about 65-75 days. Cut whole heads at the base once tall and firm, or pick outer leaves for a cut-and-come-again harvest. The upright growth keeps leaves clean and off the soil. Benefits & uses The crisp leaves and sturdy ribs make romaine the go-to for Caesar salads, and the whole heads are excellent halved and grilled. Growing guide: New to this variety? Read our full guide, How to Grow Romaine Lettuce From Seed , for step by step sowing, spacing, and harvest tips.