{"product_id":"500-parris-island-cos-romaine-lettuce-seeds","title":"500+ Parris Island Cos Romaine Lettuce Seeds","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eParris Island Cos Romaine Lettuce Seeds (Lactuca sativa var. longifolia)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e produce tall, upright heads with crisp, dark green outer leaves and tender, creamy-white hearts. This dependable open-pollinated romaine variety develops uniform heads approximately 10–12 inches tall and is known for its sweet, refreshing flavor, crunchy ribs, and moderate resistance to bolting. The leaves are excellent for Caesar salads, sandwiches, wraps, burgers, fresh garnishes, and everyday garden salads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003ePlanting Season\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBest planted in: Early Spring \u0026amp; Late Summer to Fall (Cool-Season Crop)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSow seeds in early spring, approximately 2–3 weeks before the final expected frost, or as soon as the soil can be worked. For a fall harvest, sow in late summer after the hottest weather begins to pass.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eParris Island Cos grows best in cool conditions around 60–70°F (16–21°C). Although it tolerates warmth better than many lettuce varieties, prolonged temperatures above 75–80°F (24–27°C) can cause bitter leaves, poor germination, and premature bolting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eHow to Grow Parris Island Cos Romaine Lettuce Seeds\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSow seeds directly outdoors or start them indoors approximately 3–4 weeks before transplanting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eChoose a location receiving 5–6 hours or more of direct sunlight each day. Provide light afternoon shade when growing during warmer weather.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eGrow in fertile, loose, moisture-retentive, well-drained soil enriched with compost or aged organic matter.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSow seeds approximately ⅛–¼ inch deep and cover them lightly with fine soil. Lettuce seeds should not be planted too deeply.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor direct sowing, plant seeds approximately 1 inch apart in rows spaced 12–18 inches apart.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThin seedlings to approximately 8–12 inches apart for full-sized romaine heads. Plants may be spaced 4–6 inches apart when growing smaller heads or harvesting young leaves.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eKeep the soil surface consistently moist but not waterlogged during germination.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eMaintain soil temperatures around 55–70°F (13–21°C) for the best germination. Soil temperatures above approximately 80°F (27°C) may cause lettuce seeds to become temporarily dormant.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSeeds typically germinate within approximately 4–10 days under suitable conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhen starting indoors, sow 1–2 seeds per cell and provide bright light immediately after germination.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eTransplant seedlings after they develop 3–4 true leaves. Harden them gradually for approximately one week before planting outdoors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor continuous harvests, sow another small planting every 10–14 days while temperatures remain cool.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eHow to Care for Parris Island Cos Romaine Lettuce Plants\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWater regularly and keep the soil evenly moist throughout the growing season. Lettuce has shallow roots and may develop tough, bitter leaves when allowed to dry out.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eProvide approximately 1–2 inches of water per week, depending on rainfall, temperature, and soil type.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWater near the base of the plants early in the day. Avoid repeatedly soaking the leaves and central head, especially during cool or humid weather.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePrepare the soil with compost before planting. Apply a light, balanced fertilizer after thinning or transplanting if growth is slow or the leaves appear pale.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAvoid excessive fertilizer, as overly rapid growth can produce soft, weak leaves.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eApply a light layer of clean organic mulch to conserve moisture, suppress weeds, and keep the soil cool.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eRemove weeds carefully with shallow cultivation to avoid damaging the plants’ delicate roots.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eUse shade cloth during unexpectedly hot weather to keep the plants cooler and delay bolting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInspect plants regularly for aphids, slugs, snails, cutworms, and caterpillars.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eHarvest individual outer leaves whenever they reach a useful size, leaving the central growing point intact for continued production.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor full heads, harvest when the plants are approximately 10–12 inches tall and the leaves have formed a firm, upright rosette. Cut the entire head near soil level early in the morning for the crispest texture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eParris Island Cos Romaine Lettuce typically matures within approximately 65–70 days, although tender baby leaves can be harvested much earlier.\u003c\/span\u003e\u003c\/p\u003e","brand":"Srk Garden","offers":[{"title":"Default Title","offer_id":52515789701402,"sku":"V109","price":4.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/5657\/4746\/files\/1_3de8a949-a0f7-49e8-9aab-793e5716e236.png?v=1784191960","url":"https:\/\/srkgarden.com\/products\/500-parris-island-cos-romaine-lettuce-seeds","provider":"Srk Garden","version":"1.0","type":"link"}