60-70 days. 

This delicious heirloom romaine produces a 10 to 12 inch, deep-red head with good flavor and a crisp tender texture. Virtually impervious to bolting.

Cimarron seeds grow into vibrant, red heads of lettuce that are ready to harvest in 60 to 70 days. The Cimarron lettuce can be grown in most zones, including colder zones. The leaves of the Cimarron have a mildly sweet flavor.

Contains 200 heirloom seeds

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Sow seed 1/8 inch deep, 1 inch apart in rows 12 to 18 inches apart. When plants have two or three true leaves, thin to 12-inch spacing for crisphead varieties, 6 to 10 inches for other types.