Lettuce Bibb Seeds | OSC Seeds

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Bibb Lettuce Seeds (Butterhead Type) 1745 Heirloom Vegetable. Butterhead type first offered in 1935 with deep green shaded leaves that have a distinct, mouth-watering flavour. An e xcellent variety for early spring or late summer sowing and always in high demand. How to Grow 880 seed/gram. Lettuce is a sun-loving cool weather crop that grows best in organic, well drained soil. Sow as soon as the soil can be worked in the spring, then every two weeks thereafter to ensure a continuous supply. Sow about 3 mm (1/8″) deep in rows 45 cm (18″) apart. An even supply of moisture during the entire growth period is imperative for success. Harvest head lettuce by cutting the head off at the base just below the lower leaves. Once lettuce bolts (starts to produce a rapidly growing flower stem) leaves become bitter. Show more