When ordering from the US, parcels may be subject to import tax and duty charges, which the buyer is responsible to pay. Prickly Lettuce (Lactuca serriola) is grown for the milky white sap that oozes from the plant when cut or broken. Every order will receive 50 or more, non-GMO seeds grown and harvested in the summer/fall of 2016. Germination and Growing instructions: Scatter seeds on moist soil, and press them lightly into the soil. Do NOT cover the seeds as Lactuca needs sunlight to germinate. Germination takes 5 days to two weeks. Transplant seedlings to rich, moist soil and full sun, spacing them 2 ft apart. Wild Lettuce is a biennial, which means in the first year it will make a rosette of leaves, and in the second year the flower stalk(s) will shoot up in early to mid summer to 4-6ft and produce seeds in late summer/early fall. If you're lucky, it will make seeds the first year. Wild Lettuce is hardy to zone 6 (-10F/-23C). Climate Cold Climate Dry Climate Temperate Genus Lactuca Form Seeds Watering Medium Country/Region of Manufacture United States USDA Hardiness Zone (F) 3 (-40 to -30 F) USDA Hardiness Zone (F) 4 (-30 to -20 F) USDA Hardiness Zone (F) 5 (-20 to -10 F) USDA Hardiness Zone (F) 6 (-10 to 0 F) USDA Hardiness Zone (F) 7 (0 to 10 F) USDA Hardiness Zone (F) 8 (10 to 20 F) USDA Hardiness Zone (F) 9 (20 to 30 F) USDA Hardiness Zone (F) 10 (30 to 40 F) USDA Hardiness Zone (F) 11 (40 to 50 F) Sunlight Full Sun Sunlight Partial Shade Foliage Deciduous Common Name Wild Lettuce, Opium Lettuce, Bitter Lettuce Type Seeds Species Lactuca virosa