Green Globe Artichoke.
Soil.—Select a light, rich, and rather moist soil, and trench it well; incorporating in the process a liberal portion of old, well-decomposed compost. Sea-weeds, kelp, rock-weed, and the like, where they can be obtained, are the best fertilizers; but, where these are not accessible, a slight application of salt will be beneficial.
Propagation.—Artichokes may be propagated either by seeds, or by slips, or suckers, from established plants. If by slips, they should be taken off in May, when they have grown five or six inches in height, and transplanted four or five inches deep, in rows four feet apart, and two feet apart in the rows. Water freely, if dry weather occurs before the young plants are established. Keep the ground loose by frequent hoeings; and in August or September the heads will be fit for use. Before severe weather, the plants should be covered with straw or stable-litter.
As plants of one year's growth produce but few heads, and are also later in their development of these than established plants, it is the practice of many cultivators to set a few young slips, and to destroy an equal part of the old plantation, yearly.
Propagation by Seeds.—"Sow the seeds in April, in a nursery-bed; making the drills a foot apart, and covering the seeds an inch deep. When the plants are three inches high, transplant as before directed. Plants from seeds will seldom flower the first year."—M'Int.
To raise Seeds.—Allow a few of the largest central heads to remain; and, just as the flowers expand, bend over the stalk so as to allow the rain to run from the buds, as the seeds are often injured by wet weather. In favorable seasons, they will ripen in September. According to English authority, little dependence can be placed on seedling plants: many produce small and worthless heads, whilst others produce those of large size and of good quality.
Taking the Crop.—"All of the heads should be cut as fast as they are fit for use, whether wanted or not; as allowing them to flower greatly weakens the plants, as does also permitting the stems that produced the heads to remain after the heads are cut off. For pickling whole, the heads should be cut when about two inches in diameter; for other purposes, when they have nearly attained their full size, but before the scales of the calyx begin to open. For what is called 'bottoms,' they should be cut when they are at their largest size, and just as the scales begin to show symptoms of opening, which is an indication that the flowers are about to be formed; after which, the heads are comparatively useless."—M'Int.
Use.—The portions of the plant used are the lowest parts of the leaves, or scales, of the calyx; and also the fleshy receptacles of the flower, freed from the bristles and seed-down. The latter are commonly called the "choke," on account of their disagreeable character when eaten.
Sometimes, particularly in France, the central leaf-stalk is blanched, and eaten like cardoons. The bottom, which is the top of the receptacles, is fried in paste, and enters largely into fricassees and ragouts. They are sometimes pickled, and often used in a raw state as a salad. The French also cut them into thin slices; leaving one of the scales, or calyx leaves, attached, by which the slice is lifted, and dipped in oil and vinegar before using. The English present the head whole, or cut into quarters, upon a dry plate; the guests picking off the scales one by one, which have a fleshy substance at the base. These are eaten after being dipped in oil and vinegar.
What is called "artichoke chard" is the tender leaf-stalks blanched, and cooked like cardoons. The Italians and French often eat the heads raw with vinegar, oil, salt, and pepper; but they are generally preferred when boiled.