{"product_id":"150-graines-de-laitue-iceberg-salade-potagere-semences-paysannes","title":"150 Iceberg Lettuce Seeds (Lactuca sativa)","description":"\u003cp\u003e\u003cem\u003eLactuca sativa\u003c\/em\u003e var. \u003cem\u003ecapitata\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eIceberg lettuce, crisp lettuce, American head lettuce: its name comes from railway transport in the 1920s, when Californian railcars shipped it under heaps of crushed ice — railway workers said they saw “icebergs” arriving. Its dense head and exceptional crunch have made it the most widely cultivated lettuce in the world.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCharacteristics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVery compact head:\u003c\/strong\u003e tightly packed, fleshy leaves forming a dense, firm ball.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnmatched crunch:\u003c\/strong\u003e no other lettuce holds up as well to the bite.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent storage:\u003c\/strong\u003e it stays crisp for several days in the refrigerator, unlike butterhead lettuces, which wilt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGood heat tolerance:\u003c\/strong\u003e more tolerant than most lettuces, though not completely unaffected.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSowing advice:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExposure:\u003c\/strong\u003e full sun in spring and fall, partial shade in midsummer. It tolerates heat better than other lettuces, but spring and fall crops remain the safest.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoil:\u003c\/strong\u003e cool, loose, well-drained, and lightly amended with compost. The soil must remain consistently cool: even brief drying triggers bolting and causes bitterness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e sow barely covered, as the seeds need light to germinate. Stagger sowings from March to August, every two weeks. Caution: above 25 °C, lettuce seeds enter dormancy and will no longer germinate — sow in the shade or at the end of the day during very hot weather. See \u003ca href=\"\/ko-intl\/blogs\/le-coin-des-graines\/comment-semer-graines-coton-godet-terre\"\u003ehow to sow your seeds\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePlanting advice:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTransplant at 4 or 5 leaves, spacing plants 30 to 35 cm apart — it needs more room than other lettuces to form its head. \u003cstrong\u003eDo not bury the crown\u003c\/strong\u003e, or it may rot.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCare advice:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWater regularly at the base in the morning, without wetting the foliage. Mulch to maintain soil moisture.\u003c\/li\u003e\n\u003cli\u003eLightly hoe between the rows.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHarvesting advice:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHarvest when the head feels very firm in your hand, cutting it at ground level. A head left too long becomes soft at the center and bitter.\u003c\/li\u003e\n\u003cli\u003eTip: it keeps remarkably well unwashed, wrapped in a damp cloth in the bottom of the refrigerator.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBeneficial associations:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIt works very well in companion plantings, especially with \u003ca href=\"\/ko-intl\/products\/500-graines-de-carotte-nantaise-legumes-jardin-potager-semences-paysannes\"\u003ecarrots\u003c\/a\u003e, radishes, and \u003ca href=\"\/ko-intl\/products\/200-graines-de-poireau-legumes-jardin-potager-semences-paysannes\"\u003eleeks\u003c\/a\u003e. Also see \u003ca href=\"\/ko-intl\/products\/250-graines-de-laitue-batavia-legumes-ancien-salade-semences-paysannes\"\u003eBatavia lettuce\u003c\/a\u003e and \u003ca href=\"\/ko-intl\/blogs\/le-coin-des-graines\/associations-legumes-potager\"\u003ecompanion planting in the vegetable garden\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits for biodiversity:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAllow one plant to bolt at the end of the season: its small yellow flowers attract hoverflies and solitary bees, and its seeds feed goldfinches.\u003c\/li\u003e\n\u003cli\u003eIts rapid growth helps keep the soil covered between two main crops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUses:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRaw in salads, but especially in burgers, sandwiches, wraps, and tacos, where its crunch and firmness make all the difference. Shredded into a chiffonade, it also pairs very well with Asian dishes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHarvesting your own seeds:\u003c\/strong\u003e\u003cbr\u003eAllow a strong plant to bolt: it produces a tall flower stalk, followed by seeds with fluffy tufts, which should be harvested as they mature gradually. Tip for Iceberg lettuce: because its head is so dense, cut a cross into the top to help the flower stalk emerge. Since lettuce is self-pollinating, cross-pollination is rare. See \u003ca href=\"\/ko-intl\/blogs\/le-coin-des-graines\/conserver-ses-graines\"\u003ehow to save your seeds\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOur Commitment to Quality:\u003c\/strong\u003e at SemiSauvage - Permaculture, we grow and select our seeds with respect for all living things as our guiding principle. Based near the Auvergne Volcanoes, we choose open-pollinated, non-hybrid varieties, test them for germination rates, and carefully sort and package them without any chemical treatment. Our conviction: to restore gardeners’ ability to resow, year after year, seeds that truly belong to them.\u003c\/p\u003e\n\u003cp\u003eThe crunchiest lettuce, the one that holds up in a burger.\u003c\/p\u003e","brand":"SemiSauvage","offers":[{"title":"Default Title","offer_id":48866937831757,"sku":"3760335362064","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/1658\/2477\/files\/image_T3wYT.jpg?v=1716379501","url":"https:\/\/semisauvage.com\/ko-intl\/products\/150-graines-de-laitue-iceberg-salade-potagere-semences-paysannes","provider":"SemiSauvage","version":"1.0","type":"link"}