Lettuces are available all the year round, since there is a great diversity of varieties adapted to any period the year. In some countries like Spain, there are lettuces adapted to every month of the year.

The following table shows the figures of United Kingdom market concerning imports of lettuce. The countries of origin and the weight of the packages used are indicated.

Origin	Months of availability in the United Kingdom	Weight of the packages
Belgium
Butterhead	All the year round	12/16/24 units
Iceberg	May-August	8/12 units
Cyprus
Cos	All the year round	12/14/16/18/20/24 units
Iceberg	All the year round	10/12/14/16 units
France
Butterhead	All the year round	8/9/11/12 units
Iceberg	April-November
Greece
Cos	December-April	10kg
Iceberg	December-April
Hungary	April-May	Various
Ireland
Cos	May-October	Various
Butterhead	All the year round	12 units
Iceberg	May-November	12 units
Webbs	May-October	9/12 units
Israel
Cos	November-March	10/12 units
Iceberg	November-March	8/10/12 units
Italy
Cos	November-March	24 units
Iceberg	November-March	8/10/12 units
Morocco
Butterhead	November-June	Various
Cos	November-June
Curled	November-June
The Netherlands
Butterhead	All the year round	24 units
Iceberg	May-November	8/10/12/15 units
Portugal
Iceberg	November-March	5/10kg
South Africa
Iceberg	December and May	Various
Spain
Iceberg	October-May	4kg
United Kingdom
Cos	May-October	12/18 units
Butterhead	All the year round	12 units
Iceberg	June-October	9/12/15 units
Webbs	May-October	12/18 units
The United States
Cos	November-March	Various
Iceberg	All the year round	18kg

Source: Fresh Produce Desk Book (1998)