The Culture of Vegetables and Flowers From Seeds and Roots, 16th Edition, by Sutton and Sons
Although in France the term Haricot is given to all types of Beans, except those of the English Broad Bean, in this country the word Haricot is generally applied only to the dried seeds of certain Dwarf and Climbing Beans, notably those which are white. Almost any variety, however, may be used as Haricots, but the most popular are those which produce self-coloured seeds, such as white, green, and the various shades of brown. Seed should be sown early in May and the plants treated as advised for French Beans. The pods should not be removed from the plants until the seeds are thoroughly ripe. If ripening cannot be completed in the open, pull up the plants and hang them in a shed until the seeds are quite dry.