“ In a month or six weeks, according to the heat applied, the heads are fit for use and should be cut before they reach the manure. The plants might easily be forced in frames on a mild hot-bed, or in a mushroom-house, in the same way as sea-kale. In Belgium the fresh roots are boiled and eaten with butter, and throughout the Continent the roots are stored for use as salads during winter. ”

“ If at first the leaves grow very strong, they are cut off, perhaps in the middle of August, about an inch from the ground, so as to promote the production of new leaves, and check the formation of flower-stems. About the beginning of October the plants are raised from the border, and all the large leaves cut off ”

“ When frost comes on, the boxes are protected by any kind of litter and haulm. As the salad is wanted, they are removed into some place having a moderately increased temperature, and where there is no light. ”