The leaves of the first year are pinnate, with seven or nine oblong, finely toothed leaflets. When fully developed, the plant measures from three to five feet in height; the stem being marked with fine, parallel, longitudinal grooves, or lines. The flowers are small, white, and are produced in umbels at the extremities of the branches. The seeds, eight thousand of which are contained in an ounce, are oblong, of a greenish-gray color, and closely resemble those of the common caraway.

They will keep but two years; and, even when newly grown, sometimes remain in the ground four or five weeks before vegetating.

_Soil and Culture._--Skirret succeeds best in light, mellow soil, and is propagated by suckers, or seeds. The best method is to sow the seeds annually, as, when grown from slips, or suckers, the roots are liable to be dry and woody; the seeds, on the contrary, producing roots more tender, and in greater perfection.

Sow the seeds in April, in drills one foot apart, and about an inch in depth; thin to five or six inches; and, in September, some of the roots will be sufficiently grown for use. Those required for winter should be drawn before the closing-up of the ground, and packed in sand.

_To propagate by Slips, or Suckers._--In the spring, remove the required number of young shoots, or sprouts, from the side of the roots that have remained in the ground during winter, not taking any portion of the old root in connection with the slips; and set them in rows ten inches asunder, and six inches apart in the rows. They will soon strike, and produce roots of suitable size for use in August or September.

_To raise Seeds._--The plants that have remained in the ground during the winter, if not disturbed, will send up stalks as before described, and ripen their seeds at the close of the summer. Two or three plants will yield all the seeds ordinarily required for a single garden.

_Use._--The roots were formerly much esteemed, but are now neglected for those greatly inferior. When cooked and served as salsify or scorzonera, they are the whitest and sweetest of esculent roots, and afford a considerable portion of nourishment.

There are no varieties.

SWEET POTATO.

Spanish Potato. Carolina Potato. Convolvulus batatus. Ipomoea batatas.

The Sweet Potato is indigenous to both the East and West Indies. Where its growth is natural, the plant is perennial; but, in cultivation, it is always treated as an annual. The stem is running or climbing, round and slender; the leaves are heart-shaped and smooth, with irregular, angular lobes; the flowers, which are produced in small groups of three or four, are large, bell-shaped, and of a violet or purple color; the seeds are black, triangular, and retain their vitality two or three years,--twenty-three hundred are contained in an ounce.

The plants rarely blossom in the Northern or Middle States, and the perfect ripening of the seeds is of still more rare occurrence. The latter are, however, never employed in ordinary culture; and are sown only for the production of new varieties, as is sometimes practised with the common potato.

_Soil, Planting, and Cultivation._--In warm climates, the Sweet Potato is cultivated in much the same manner as the common potato is treated at the North. It succeeds best in light, warm, mellow soil, which should be deeply stirred and well enriched. The slips, or sprouts, may be set on ridges four feet apart, and fifteen inches from plant to plant; or in hills four or five feet apart in each direction, three plants being allowed to a hill. During the summer, give the vines ordinary culture; and late in September, or early in October, the tubers will have attained their growth, and be ready for harvesting. The slips, or sprouts, are generally obtained by setting the tubers in a hot-bed in March or April, and breaking off or separating the sprouts from the tubers as fast as they reach four or five inches in height or attain a suitable size for transplanting. In favorable seasons, the plucking may be repeated three or four times. In setting out the slips, the lower part should be sunk from one-third to one-half the entire length; and, if very dry weather occurs, water should be moderately applied.

_Keeping._--The essentials for the preservation of Sweet Potatoes are dryness and a warm and even temperature. Where these conditions are not supplied, the tubers speedily decay. By packing in dry sand, and storing in a warm, dry room, they are sometimes preserved in the Northern States until the time of starting the plants in spring.

_Varieties._--Though numerous other varieties, less marked and distinctive, are described by different authors, and are catalogued by gardeners and seedsmen, the princ.i.p.al are as follow:--

KENTUCKY EARLY RED. _Murray._

Red Nansemond.

Tubers red, or purplish-red, of medium size; flesh yellow, dry, sweet, and of good quality. A very prolific, hardy variety; recommended as the best red Sweet Potato for Northern culture.

LARGE WHITE.

Patate-blanche of the French.

Tubers from six to ten inches in length,--thickest at the middle, where they measure from two to nearly three inches in diameter; weight from six ounces to a pound and upwards; skin dusky white; flesh nearly white, but with a shade of yellow. Not so fine-grained or so sweet as the Yellow or Purple, but quite farinaceous and well flavored.

It requires a long season in order to its full development; but, being remarkably hardy, it will succeed well in any of the Middle States, and attain a fair size in the warmer sections of New England.

NANSEMOND.

Yellow Nansemond.

A variety said to have originated in Nansemond County, Va.; whence the name. Tubers large, yellow, swollen at the middle, and tapering to the ends; flesh yellow, dry, unctuous, sweet, and well flavored.

It is early fit for the table; matures in short seasons; is very productive; succeeds well in almost any tillable soil; and, having been long acclimated, is one of the best sorts for cultivation at the North,--very good crops having been obtained in Maine and the Canadas.

PURPLE-SKINNED.

New-Orleans Purple. Patate violette. _Vil._

Tubers swollen at the middle, and tapering in each direction to a point,--measuring, when well grown, from seven to nine inches in length, and from two to three inches in diameter; skin smooth, reddish-purple; flesh fine-grained, sugary, and of excellent quality. The plants attain a remarkable length, and the tubers are rarely united about the neck as in most other varieties.

The Purple-skinned is early and productive, but keeps badly. It would probably succeed much better in cool climates than either the White or the Yellow. It is much grown in the vicinity of Paris.

RED-SKINNED, OR AMERICAN RED.

Tubers fusiform, long, and comparatively slender,--the length often exceeding twelve inches, and the diameter rarely above two inches; weight from three to ten ounces; skin purplish-red, smooth and shining; flesh yellow, very fine-grained, unctuous, sugary, and farinaceous; plant long and slender.

This variety is early, quite hardy, very productive, and excellent, but does not keep so well as the yellow or white sorts. It is well adapted for cultivation in the cooler sections of the United States; where, in favorable seasons, the crop has proved as certain, and the yield nearly as abundant, as that of the common potato.

ROSE-COLORED. _Vil._

Tubers somewhat ovoid, or egg-shaped, often grooved, or furrowed, and of extraordinary size. Well-grown specimens will measure eight or nine inches in length, and four inches or more in diameter; frequently weighing two and a half, and sometimes greatly exceeding three pounds.

Skin rose-colored, shaded or variegated with yellow; flesh sweet, of a pleasant, nut-like flavor, but less soft or unctuous than that of the other varieties.

It is hardy, remarkably productive, and, its excellent keeping properties considered, one of the best sorts for cultivation.

YELLOW-SKINNED.

Yellow Carolina.

Tubers from six to ten inches in length, thickest at the middle, where they measure from two to three inches in diameter, and pointed at the extremities; weight varying from four to twelve ounces and upwards; skin smooth, yellow; flesh yellow, fine-grained, unctuous, and remarkably sugary,--surpa.s.sing, in this last respect, nearly all other varieties.

Not so early as the Red-skinned or the Purple.

When grown in the Southern States, it yields well; perfectly matures its crop; and, in color and flavor, the tubers will accord with the description above given. When grown in the Middle States, or in the warmer parts of New England, it decreases in size; the tubers become longer and more slender; the color, externally and internally, becomes much paler, or nearly white; and the flesh, to a great extent, loses the fine, dry, and sugary qualities which it possesses when grown in warm climates.

TUBEROUS-ROOTED CHICKLING VETCH.

Tuberous-rooted Pea. Eatable-rooted Pea. Lathyrus tuberosus.

Perennial; stem about six feet high,--climbing, slender, four-sided, smooth, and of a clear green color; flowers rather large, in bunches, of a fine carmine rose-color, and somewhat fragrant; pod smooth; seeds rather large, oblong, a little angular, of a brown color, spotted with black; root spreading, furnished with numerous blackish, irregularly shaped tubers, which are generally from an ounce to three ounces in weight.