A large, somewhat flattened variety, much cultivated about Paris; skin fine russet-yellow; neck small. It is not early, but very productive, and of excellent quality.
Pear-Shaped.
Bulb pyriform, measuring four inches and a half in depth, and two inches in diameter at the broadest part; neck small; skin copper-red. It is quite late, but is of good quality, and keeps well.
Potato Onion.
Underground Onion.
Bulb flattened, from two and a half to three inches in diameter, and about two inches in depth; skin copper-yellow; flavor sugary, mild, and excellent. It does not keep so well as many other varieties; but remains sound longer, if the leaves are cut two or three inches above the top of the bulb at the time of harvesting.
The Potato Onion produces no seeds, neither small bulbs upon its stalks, in the manner of many of the species of the Onion family; but, if a full-grown bulb be set in spring, a number of bulbs of various sizes will be formed, beneath the surface of the ground, about the parent bulb. By means of these it is propagated, and an abundant supply often secured in localities where the varieties raised from seed frequently wholly fail, either from the maggot, effects of climate, or other causes.
Like the other kinds of onions, it requires a rich, deep soil, well manured, and dry at the bottom. This should be deeply and thoroughly stirred, and then raised in ridges of moderate height, fifteen inches apart. In April, select the large bulbs, and set them on the ridges, ten inches apart, with the crown of the bulbs just below the surface of the ground. The subsequent culture consists in keeping them clean from weeds, and gathering a little earth about them from time to time in the process of cultivation. As soon as the tops are entirely dead, they will be ready for harvesting.
It is very prolific, yielding from four to six fold. Such of the crop as may be too small for the table should be preserved during the winter, to be set in the following spring; planting them out in April, in drills one foot apart and three inches from each other in the drills, and sinking the crowns just below the surface of the ground. They attain their full size by September.
Silver-Skin.