{"product_id":"buttercrunch-organic-lettuce-seed","title":"Buttercrunch Organic Lettuce Seed","description":"\u003ch4\u003e\u003cstrong\u003e\u003cimg class=\"alignnone wp-image-1232 size-large\" src=\"https:\/\/kakaseeds.com\/wp-content\/uploads\/2026\/06\/%E5%A5%B6%E6%B2%B9%E7%94%9F%E8%8F%9C%E7%94%9F%E9%95%BF%E6%B8%A9%E5%BA%A61-1024x352.png\" alt=\"\" width=\"1024\" height=\"352\"\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ch4\u003e\u003c\/h4\u003e\n\u003ch4\u003e\n\u003cstrong\u003eLatin Name\u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003eLactuca sativa\u003c\/strong\u003e\n\u003c\/h4\u003e\n\u003ch4\u003e\n\u003cstrong\u003eDays To Maturity \u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003e28 baby; 46 full size\u003c\/strong\u003e\n\u003c\/h4\u003e\n\u003ch4\u003e\n\u003cstrong\u003eLife Cycle \u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003eAnnual\u003c\/strong\u003e\n\u003c\/h4\u003e\n\u003ch4\u003e\n\u003cstrong\u003eHybrid Status \u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003eOpen Pollinated\u003c\/strong\u003e\n\u003c\/h4\u003e\n\u003ch4\u003e\n\u003cstrong\u003eProduct Features\u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003eOrganic Seeds, Plants, and Supplies\u003c\/strong\u003e\n\u003c\/h4\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eSCIENTIFIC NAME:\u003c\/h2\u003e\n\u003cp\u003eLactuca sativa\u003c\/p\u003e\n\u003ch2\u003eCULTURE:\u003c\/h2\u003e\n\u003cp\u003eLettuce is a hardy, cool-weather crop and can be planted with your earliest worked soil. It grows best at 60–65°F (16–18°C) and germinates best below 70°F (21°C), so careful variety selection is key for success in hotter weather.\u003c\/p\u003e\n\u003ch2\u003eTHERMAL DORMANCY:\u003c\/h2\u003e\n\u003cp\u003eLettuce seed can enter thermal dormancy when exposed to high temperatures.. Optimum germination results at soil temperatures of 60-68°F (16-20°C). The priming process in pelleted lettuce seeds broadens the temperature range in which the seeds will germinate, overcoming some of their thermal dormancy.\u003c\/p\u003e\n\u003ch2\u003eDAYS TO MATURITY:\u003c\/h2\u003e\n\u003cp\u003eFrom date of spring\/cool weather transplanting. Subtract 10–14 days for late spring\/early summer\/warm weather transplanting. Add about 14 days for direct seeding.\u003cbr\u003e\nTRANSPLANTING for HEAD LETTUCE:3–4 weeks before field planting, sow in 128-cell trays barely covered with vermiculite or fine soil. If necessary, utilize shade and frequent misting to keep trays cooled below 75°F (25°C) during germination. Young plants properly hardened at least 3–5 days before planting can survive temperatures as low as 20°F (-6°C). Transplant iceberg, romaine, and butterhead lettuce 10–12\" apart in rows 15–18\" apart, other types 8–10\" apart in rows 12–18\", and mini heads as close as 6\" in a grid.\u003cbr\u003e\nDIRECT SEEDING for BABY LEAF:Seeds can germinate well in soils as low as 40°F (4°C) but often poorly above 75°F (24°C). Sow 4–6 seeds\/inch in rows at least 2\" apart. Cover lightly to 1\/8\" and firm gently. Dry soil must be watered to ensure coolness and moisture for uniform germination.\u003c\/p\u003e\n\u003ch2\u003eAVG. DIRECT SEEDING RATE:\u003c\/h2\u003e\n\u003cp\u003eFor baby leaf: 1,000 seeds\/16', 1 oz.\/400', 1 lb.\/6,400' at 60 seeds\/ft.\u003c\/p\u003e\n\u003ch2\u003eSUCCESSION PLANTING:\u003c\/h2\u003e\n\u003cp\u003eSow every 2–3 weeks for a continuous supply of either full heads or salad mix.\u003c\/p\u003e\n\u003ch2\u003eHARVEST:\u003c\/h2\u003e\n\u003cp\u003eHead Lettuce: Cut at base, keeping wrapper leaves for handling loss. Consider cutting alternating plants to extend harvest window, allowing remaining plants to continue to grow. Pack heads in layers facing cut ends away. Wash off sap and cool immediately to prevent staining and dehydration. Baby Leaf: Harvest about 1\" above the growing point when leaves reach desired harvestable length, about 3–4\" long. Remove harvest debris to improve regrowth quality.\u003c\/p\u003e\n\u003ch2\u003eSTORAGE:\u003c\/h2\u003e\n\u003cp\u003eKeep cold at 35–40°F (1–4°C) with high humidity but free of standing water. Head Lettuce: Keep 14–20 days, less for delicate types like butterhead and oakleaf, and longer for lettuce grown slowly in cooler temperatures. For one-cut types, extend season in cold weather by holding cut heads in cooler up to two weeks to process into salad mix.\u003c\/p\u003e\n\u003ch2\u003eMT0-30 SEEDS:\u003c\/h2\u003e\n\u003cp\u003eA variety's description followed by \"MT0-30\" indicates that the seed offered for sale has been tested for the presence of Lettuce Mosaic Virus and that no LMV was found in a sample of at least 30,000 seeds.\u003c\/p\u003e\n\u003ch2\u003eTRANSPLANTS:\u003c\/h2\u003e\n\u003cp\u003eAvg. 16,000 plants\/oz.\u003c\/p\u003e\n\u003ch2\u003eSEEDS\/OZ. (AVG.):\u003c\/h2\u003e\n\u003cp\u003e17,800.\u003c\/p\u003e\n\u003ch2\u003ePACKET:\u003c\/h2\u003e\n\u003cp\u003e500 seeds, unless otherwise indicated.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eKaKaSeeds is committed to your success, every step of the way.\u003c\/p\u003e\n\u003cp\u003eWe want you, our customer, to be 100% satisfied with all of our seeds, tools, and supplies.\u003c\/p\u003e\n\u003cp\u003eIf anything you purchase from us proves unsatisfactory, we will either replace the item or refund the purchase price.\u003c\/p\u003e\n\n\n\u003cdiv class=\"description collapsible-xs \"\u003e\n\u003cp id=\"collapsible-description-1\"\u003e\u003cstrong\u003eImproved selection for full-size heads.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"details collapsible-xs\"\u003e\n\u003cp id=\"collapsible-details-1\"\u003e\u003cstrong\u003eJohnny’s produces Buttercrunch lettuce using the original stock seed from Cornell University. Forms a small, open but tightly bunched, 6″ rosette that is fan-shaped rather than round. Dark green leaves and small compact hearts that blanch to an appetizing yellow color. Crisp and sweet. MT0-30. USDA Certified Organic.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003ePacket: 500 seeds\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAvg. 450,000 seeds\/lb\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"kkseeds","offers":[{"title":"Packet","offer_id":53742877376826,"sku":null,"price":6.8,"currency_code":"USD","in_stock":true},{"title":"1 0unce","offer_id":53742877409594,"sku":null,"price":19.85,"currency_code":"USD","in_stock":true},{"title":"1\/4 Pound","offer_id":53742877442362,"sku":null,"price":48.7,"currency_code":"USD","in_stock":true},{"title":"1 Pound","offer_id":53742877475130,"sku":null,"price":167.15,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":53742877507898,"sku":null,"price":794.1,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":53742877540666,"sku":null,"price":3772.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/9707\/9098\/files\/1226__E5_A5_B6_E6_B2_B9_E7_94_9F_E8_8F_9C3-scaled.webp?v=1784199874","url":"https:\/\/kkseed.xyz\/products\/buttercrunch-organic-lettuce-seed","provider":"kkseeds","version":"1.0","type":"link"}