The Potato or Underground Onion is not much grown in this country, in consequence of occasional losses of the crop in severe winters. In the South of England the rule as to growing it is to plant on the shortest day, and take up on the longest. It requires a rich, deep soil, and to be planted in rows twelve inches apart, the bulbs nine inches apart in the row. Some cultivators earth them up like Potatoes, but we prefer to let the bulbs rise into the light, even by the removal of the earth, so as to form a basin around each, taking care, of course, not to lay bare the roots in so doing. When the planted bulbs have put forth a good head of leaves, they form clusters of bulbs around them, and the best growth is made in full daylight, the bulbs sitting on and not in the soil.
The Onion Grub (Phorbia cepetorum) is often very troublesome to the crop, especially in its early stages, and its presence may be known by the grass becoming yellow and falling on the ground. It will then be found that the white portion, which should become the bulb, has been pierced to the centre by a fleshy, shining maggot, a quarter of an inch in length, this being the larva of an ashy-coloured, ill-looking, two-winged fly. Where this plague has acquired such a hold as to be a serious nuisance, care should be taken to clear out all the old store of Onions instantly upon a sufficiency of young Onions becoming available in spring, and to burn them without hesitation. If left to become garden waste in the usual way, these old Onions do much to perpetuate and augment the plague. A regular use of lime and soot will be found an effectual preventive. Other remedies are suggested in the article on Onion Fly, Page 420.
PARSNIP
Pastinaca sativa
The Parsnip is one of the most profitable roots the earth produces. Probably its sweet flavour imposes a limit on its usefulness, but bad cooking doubtless has much to answer for, the people in our great towns being, in too many instances, quite ignorant of the proper mode of cooking this nourishing root. When cut in strips, slightly boiled and served up almost crisp, it is a poor article for human food; but when cooked whole in such a way as to appear on the table like a mass of marrow, it is at once a digestible dainty and a substantial food that the people might consume more largely than they do, to their advantage.
The Parsnip requires only one special condition for its welfare, and that is a piece of ground prepared for it by honest digging. Rich ground it does not need, but the crop will certainly be the finer from a deep fertile sandy loam than from a poor soil of any kind. But the one great point is to trench the ground in autumn and lay it up rough for the winter. Then at the very first opportunity in February or March it can be levelled down and the seed sown, and the task got out of hand before the rush of spring work comes on. A fine seed-bed should be prepared either in one large piece or in four-feet strips, as may best suit other arrangements. Sow in shallow drills eighteen inches apart, dropping the seeds from the hand in twos and threes at a distance of six inches apart; cover lightly, and touch over with the hoe or rake to make a neat finish. As soon as the plants are visible, ply the hoe to keep down weeds and thin the crop slightly to prevent crowding anywhere. The thinning should be carried on from time to time until the plants are a foot apart; or if the ground is strong and large roots are required, they may be allowed fifteen inches. Good-quality roots may be grown on the worst types of clay and on stony soils by boring holes and filling them in with fine earth, in the manner described for Beet and Carrot. The holes for Parsnip, however, should be rather larger and deeper, with more space allowed between. It may be well to lift some of the roots in November, a few spits of earth being removed first at one end or corner of the piece to facilitate removal without breaking the roots: these may be put aside for immediate use, but the general bulk of the crop should remain in the ground to be dug as wanted, because the Parsnip keeps better in the ground than out of it, and in the event of severe frost a coat of rough litter will suffice to prevent injury. Whatever remains over in the month of February should be lifted and trimmed up and stored in the coolest place that can be found, a coat of earth or sand being sufficient to protect the roots from the injurious action of the atmosphere.
GARDEN PEA
Pisum sativum
Thanks to the skill and enterprise of enthusiastic specialists, we have now the wrinkled as well as the round-seeded Peas for the earliest supply of this favourite vegetable. Not only can we commence the season with a dish possessing the true marrowfat flavour, but in the new maincrop varieties dwarf robust growth is combined with free-bearing qualities, while the size of both Peas and pods has been increased without in the smallest degree sacrificing flavour. On the contrary, there has been a distinct and welcome advance in all the special characteristics which have won for this vegetable its popular position, and so highly is the crop esteemed that it is usually regarded as a criterion by which the general management of a garden is judged.