This brilliant green lettuce, developed in Israel, remains sweet even through the heat of summer. Mildew and disease resistant, it usually will not bolt and is valued for its crispness and flavor. 55-60 day for full grown heads. This brilliant green Romaine type lettuce hails from Israel, where it was developed to withstand the intense Mediterranean heat without losing its sweetness. Wild lettuce, however, from which modern lettuce is derived, originated in Asia Minor. The ancient historian Herodotus records its presence on the tables of 6th century Persian kings, and throughout the following centuries it became a popular crop all over Europe. Columbus brought it with him to the New World, starting its spread over the North American continent. Without a doubt, lettuce now holds a place in nearly every garden on the globe. Direct sow outside in early spring. Can be fall planted. Plant about 12"-18" apart and 1/8" below soil surface. Rows should be spaced at 18"-24" apart. Thank you for looking at our listing!