{"product_id":"american-flag-leek-seeds","title":"American Flag Leek Seeds","description":"\u003ch2\u003eHistory\u003c\/h2\u003e\u003cp\u003eAmerican Flag Leek — also known as Large American Flag or Broad London — is one of the most celebrated heirloom leeks in the American garden tradition, with roots tracing back to 19th-century European kitchen gardens. Brought to the United States by immigrant gardeners who prized its reliability and exceptional flavor, it quickly became a staple of the American vegetable garden and a fixture in seed catalogs throughout the 1800s and early 1900s. Leeks themselves have been cultivated for over 3,000 years — beloved by the ancient Egyptians, Greeks, and Romans as a food of both sustenance and sophistication. American Flag remains the gold standard of heirloom leeks: thick, upright, and deeply flavorful, with the mild sweetness that makes leeks one of the most versatile vegetables in the kitchen. Open-pollinated and non-GMO.\u003c\/p\u003e\u003ch2\u003ePlant Profile\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDays to Maturity:\u003c\/strong\u003e 70–120 days from transplant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStalk Size:\u003c\/strong\u003e Thick, upright stalks 1–2 inches in diameter, 6–9 inches of white shank\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaves:\u003c\/strong\u003e Broad, flat, blue-green leaves with a classic flag-like appearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlant Type:\u003c\/strong\u003e Open-pollinated, non-GMO heirloom biennial grown as an annual\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFlavor Profile\u003c\/h2\u003e\u003cp\u003eAmerican Flag Leeks have a mild, sweet, and subtly onion-like flavor that is far more delicate than a standard onion — without the sharpness or bite. The white shank is tender and silky when cooked, developing a rich, buttery sweetness that deepens with slow cooking. Raw, they offer a gentle allium flavor perfect for salads and garnishes. Cooked, they melt into soups, gratins, and braises with an elegance that few vegetables can match. Their flavor is complex enough to anchor a dish on its own, yet mild enough to complement nearly any ingredient.\u003c\/p\u003e\u003ch2\u003eGrowth Type \u0026amp; Harvest Yields\u003c\/h2\u003e\u003cp\u003eAmerican Flag is a vigorous, upright grower that produces impressively thick stalks from a modest garden footprint. Plants grow 18–24 inches tall with broad, flat leaves and a long, blanched white shank that develops as you hill soil around the base. Start seeds indoors for the longest growing season and transplant after the last frost. A planting of 20–30 leeks will provide an abundant harvest for fresh use, storage, and cooking throughout fall and into winter. Leeks are cold-hardy and improve in flavor after light frosts.\u003c\/p\u003e\u003ch2\u003eDisease Resistance\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGood resistance to leek rust in typical garden conditions\u003c\/li\u003e\n\u003cli\u003eExcellent cold hardiness — survives light frosts and improves in flavor after cold exposure\u003c\/li\u003e\n\u003cli\u003eRarely troubled by pests — strong allium oils deter most insects\u003c\/li\u003e\n\u003cli\u003eTip: Avoid overwatering and ensure good drainage to prevent rot at the base\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGrowing Tips \u0026amp; Planting Dimensions\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpacing: 6 inches between plants in rows 12 inches apart\u003c\/li\u003e\n\u003cli\u003eSow depth: ¼ inch deep indoors; transplant seedlings when pencil-thin\u003c\/li\u003e\n\u003cli\u003eGermination: 10–14 days at soil temps of 65–75°F\u003c\/li\u003e\n\u003cli\u003eFull sun — at least 6 hours of direct sunlight daily\u003c\/li\u003e\n\u003cli\u003ePrefers rich, well-drained soil with consistent moisture\u003c\/li\u003e\n\u003cli\u003eHill soil around the base as plants grow to blanch and lengthen the white shank\u003c\/li\u003e\n\u003cli\u003eTransplant deeply — set seedlings 4–6 inches deep to maximize shank length\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhen to Plant\u003c\/h2\u003e\u003cp\u003eStart seeds indoors 10–12 weeks before your last frost date. Transplant outdoors after frost danger has passed when seedlings are pencil-thin (about 6–8 inches tall). Leeks can also be transplanted in late summer for a fall and winter harvest. Find your frost dates and hardiness zone at the \u003ca href=\"https:\/\/planthardiness.ars.usda.gov\"\u003eUSDA Plant Hardiness Zone Map\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eCompanion Plants \u0026amp; Mutual Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarrots\u003c\/strong\u003e — leeks deter carrot fly; carrots deter leek moth — a classic pairing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCelery\u003c\/strong\u003e — benefits from leeks' pest-deterring allium oils\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrassicas (Broccoli, Cauliflower, Brussels Sprouts)\u003c\/strong\u003e — leeks repel aphids and cabbage worms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarigolds\u003c\/strong\u003e — complement leeks' pest-deterring properties throughout the bed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid planting near:\u003c\/strong\u003e beans and peas — alliums inhibit legume growth\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHow to Enjoy\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoups \u0026amp; Stocks:\u003c\/strong\u003e The defining ingredient in potato leek soup — silky, sweet, and deeply satisfying\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGratins \u0026amp; Braises:\u003c\/strong\u003e Slow-cook in butter or cream for an elegant side dish that pairs with roasted meats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiches \u0026amp; Tarts:\u003c\/strong\u003e Sautéed leeks add a mild, sweet depth to egg dishes and savory pastries\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoasted:\u003c\/strong\u003e Halve and roast with olive oil and thyme until caramelized and tender\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaw:\u003c\/strong\u003e Thinly sliced young leeks add a gentle allium note to salads and grain bowls\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Gardeners Love American Flag Leek\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOne of the most reliable and productive heirloom leeks available — a true garden classic\u003c\/li\u003e\n\u003cli\u003eMild, sweet flavor that is far more versatile than onions in the kitchen\u003c\/li\u003e\n\u003cli\u003eThick, impressive stalks with a long white shank — beautiful and productive\u003c\/li\u003e\n\u003cli\u003eExcellent cold hardiness — extends the harvest deep into fall and early winter\u003c\/li\u003e\n\u003cli\u003eOpen-pollinated and non-GMO — save your own seeds year after year\u003c\/li\u003e\n\u003cli\u003eA staple of American kitchen gardens since the 1800s\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHarvest Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHarvest when stalks reach 1 inch or more in diameter — typically 70–120 days from transplant\u003c\/li\u003e\n\u003cli\u003eLoosen soil with a fork before pulling to avoid breaking the shank\u003c\/li\u003e\n\u003cli\u003eLeeks can be left in the ground through light frosts — flavor improves with cold\u003c\/li\u003e\n\u003cli\u003eTrim roots and dark green tops before storing; refrigerate for up to 2 weeks\u003c\/li\u003e\n\u003cli\u003eFor long-term storage, blanch and freeze sliced leeks for use in soups and braises all winter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eOrder Today\u003c\/h2\u003e\u003cp\u003eAdd American Flag Leek Seeds to your garden this season and grow one of the most elegant and flavorful vegetables in the heirloom tradition. Choose your pack size and begin to grow.\u003c\/p\u003e","brand":"Garden Heirloom Seeds","offers":[{"title":"Starter Pack of 50 seeds","offer_id":53879622009146,"sku":null,"price":0.99,"currency_code":"USD","in_stock":true},{"title":"Garden Pack of 150 seeds - 🌱 Best Value","offer_id":53879622041914,"sku":null,"price":2.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/7850\/9626\/files\/american-flag-leek-harvest-basket.png?v=1786149506","url":"https:\/\/gardenheirloomseeds.com\/products\/american-flag-leek-seeds","provider":"Garden Heirloom Seeds","version":"1.0","type":"link"}