Lettuce
Iceberg lettuce
Iceberg lettuce: Sowing, planting and harvest calendar
Iceberg lettuce belongs to Lactuca sativa in the Asteraceae family. It is a crisphead type, with crunchy leaves forming a usually round, tightly packed head. This distinguishes it from romaine lettuce, whose upright leaves make an elongated head. Both belong to the same species, but they are not two names for the same lettuce type.Iceberg leaves are firm, with clear ribs and a juicy texture. Outer leaves are more strongly coloured, while the heart is often paler. Their overlapping arrangement produces a dense head resembling a small ball. Flavour is generally mild and unobtrusive; its crunch is one of its main attractions in the kitchen.The term iceberg includes several varieties with different sizes, colours and seasonal adaptations. 'Hollywood', for example, is a medium-sized iceberg with a dense, round head. 'Sioux' has red-tinged leaves. An iceberg is therefore not necessarily entirely green or always the same size. Resistance to bolting also…