Description
The Classic Caesar Crunch: Vanda Inter Seeds Cos Lettuce
Meet the high demand of the fresh produce and restaurant markets with Vanda Inter Seeds Cos Lettuce. Widely recognized as Romaine, this variety is the undisputed king of the Caesar salad, prized by chefs and consumers for its robust, crunchy midribs and sweet, crisp leaves. Unlike softer loose-leaf varieties, Cos lettuce holds up incredibly well to heavy dressings and heat, making it a versatile favorite for salads, wraps, and sandwiches. This elite Vanda variety ensures professional growers can consistently deliver that signature “Cos crunch” with commercial-grade uniformity.
Space-Efficient Yields and Tropical Durability: The architectural advantage of Cos lettuce is its compact, vertical growth habit. This upright structure allows for higher-density planting per square meter, maximizing yield in both raised soil beds and hydroponic channels. Furthermore, growing crisphead-style lettuces in hot climates can often lead to internal tip-burn or bitter sap. This hybrid is genetically fortified to resist these tropical stressors, ensuring the leaves remain sweet, clean, and unblemished from base to tip, even under intense lighting and warm temperatures.
Key Characteristics:
- Signature Texture: Features thick, water-dense midribs that provide a loud, refreshing crunch and a naturally sweet flavor profile.
- Space-Saving Architecture: Tall, upright heads keep the lower leaves off the moist soil, reducing rot and allowing for high-density commercial planting.
- Elite Heat Tolerance: Highly resistant to tip-burn, bolting, and bitterness, ensuring reliable quality during hot tropical seasons.
- Versatile Cultivation: An outstanding performer in nutrient film technique (NFT), deep water culture (DWC), and organic soil farming.
Professional Planting & Care:
- Nursery Management: Sow seeds shallowly in premium peat moss or hydroponic starter sponges, as they require light to germinate. Keep the substrate consistently moist. Seedlings will emerge in 3–5 days and are ready to transplant in about 15–20 days.
- Soil & Spacing: Transplant into well-draining, compost-enriched soil. Space plants 20–25 cm apart. The upright nature of Cos allows for slightly tighter spacing than spreading varieties. For hydroponics, transfer to net cups once roots are established.
- Watering & Nutrition: Cos lettuce requires steady hydration to develop its thick, crunchy ribs. Avoid water stress. In hydroponics, maintain an EC of 1.2–1.6. Ensure adequate Calcium (Ca) uptake to prevent tip-burn and support structural crispness.
- Harvesting: Harvest at 45–50 days. Cut the entire head cleanly at the base in the early morning while the plant is fully turgid to maximize shelf life and post-harvest crunch.
Available at Asia Seed Co: We provide authentic Vanda Inter Seeds Cos Lettuce genetics, securely moisture-sealed in 1g packs containing approximately 850 to 900 high-viability seeds. Grow this elite Romaine to secure a crisp, premium-grade harvest for your commercial or home operation.





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