Lettuce Green Romaine Seeds – Heirloom Crisp-Head Salad Staple

Ontario Grown
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Out of stock, Sorry, currently out of stock

Contains about 1 gram of seeds

$1.95

SKU: GS-9455-LET-100

Free shipping on orders over $50

Organicly grown

Non GMO

Description

Lettuce 'Green Romaine' (Lactuca sativa), also widely known as Paris White Cos, is a classic open-pollinated heirloom prized for its erect growth habit, firm texture, and sweet flavor. Growing into tall, tightly folded upright heads reaching 10 to 12 inches in height, it features thick, crisp dark-green outer leaves protecting a tender, juicy, pale-yellow heart. Renowned as the essential foundation for traditional Caesar salads, Green Romaine provides a rich source of vitamins, crisp texture, and high heat tolerance compared to delicate loose-leaf varieties. It performs reliably throughout spring, early summer, and fall garden plantings.

Specifications

Plant Name: Lettuce 'Green Romaine' / 'Paris White Cos' (Lactuca sativa)
Cultivar Type: Heirloom, Open-Pollinated
Plant Class: Cool-Season Annual Leafy Green
Color: Deep emerald-green outer foliage, pale yellow-green interior heart
Plant Characteristics: Tall upright romaine head habit (10–12 inches tall / 25–30 cm), thick crisp leaves, crunchy central rib, high bolt resistance
Suitable Space: Vegetable garden beds, raised plots, companion rows, patio containers
Season: Spring Harvest, Early Summer, Late Summer through Autumn Harvest (Cool Season, ~65–70 Days to Maturity)
Best Time for Sowing (Zone 6b): Direct sow outdoors early April to mid-May as soon as soil can be worked in spring (sow 0.25 inches deep). Re-sow mid-August through September for autumn crops. Alternatively, start indoors in plug trays late March for early outdoor transplanting.
Sunlight: Full Sun to Partial Shade (thrives in full sun; partial afternoon shade extends summer harvests)
Watering Needs: Moderate (requires consistent moisture to preserve crunchy texture, prevent leaf bitterness) Pros & Cons
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What is included?

Contains about 1 gram of seeds

Check out the growing specs for the specific organic heirloom seeds you bought.

Good to know

Superior heat resistance, bolt tolerance compared to loose-leaf, butterhead lettuce types
Thick, sturdy leaves store remarkably well after harvest without wilting quickly
Classic crunchy texture, sweet interior hearts ideal for Caesar salads, wraps, fresh grilling

Requires longer growing window (~65 days) to form full, tight upright heads
Outer leaves can become slightly tough if grown in dry soil without consistent watering

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