Head: Strains of Ithaca, Salinas and Pennlake have performed best in N.C.
Romaine/Cos: Romulus or Signal
Leaf: (green) Salad Bowl, Slobolt, Grand Rapids, Green Vision; (red fringe) Red Sails, Royal Red; (red) Ruby.
Butterhead: (loose head) Buttercrunch, Nancy (a.k.a. Boston head), Esmeralda, Ermosa.
Soils and Fertilizers -- Successful production of lettuce depends on vigorous growth. A wide range of well-drained soils can be used; however, the crop does best on fertile, high organic matter soils that have good water-holding capacity.
Adequate nutrients and a continuous moisture
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