900 seeds. 65 days. Asteraceae lactuca sativa. Butterhead. Annual.
 
Lettuce 'Buttercrunch' is a bright green heading lettuce. It is known to be slow to bolt and heat tolerant. It forms a loose head with a blanched center, keeping the inner leaves crisp and tender. This American heirloom was introduced in 1963 by Cornell University and was also an All-American Selections winner.
    
Sowing Lettuce Seeds: 
 
Sow seeds on the surface of the soil in early spring and lightly cover with soil. Thin to 8 inches apart. Full sun to part shade.
 
Photo courtesy of Diane's Flower Seeds