The Cauliflower

by A. A. Crozier

CULTIVATION.

In cultivation everything depends on keeping up a steady, vigorous growth, for if the plants are checked in their growth, they are liable either to form small heads prematurely, or to continue their growth so late as to fail to head at all. Level cultivation is usually practiced, the same as in ordinary field crops. Drawing the earth to the stems, as sometimes recommended and practiced abroad, is unnecessary, though with tall growing varieties it serves a useful purpose in preventing the plants being blown over by the wind. Cultivation should continue until the leaves are so large that they are liable to be broken off, or until the plants are nearly ready to head. The application of a mulch of manure or litter at the time cultivation ceases, is an excellent practice, though seldom resorted to. It is important that deep cultivation should cease at the right time, even if the hoe has to be used afterward. The crop may be seriously injured, or at least delayed, by cultivation after the plants begin to head. At this time the ground should be undisturbed so that the roots may occupy the entire soil. Dry weather, and the compact nature of the soil after cultivation ceases, check the growth of the plants, and promote the formation of heads, providing the plants have attained a proper age and size. The influence of a firm soil in promoting heading is also seen in the success with which cauliflowers can frequently be grown after peas or other early crops. In autumn the first sharp frosts appear to be particularly efficacious in starting the plants to heading.

IRRIGATION.

After heading has commenced is the time when irrigation is most needed. An abundance of water at this time will add greatly, both to the quantity and quality of the product, particularly if some fertilizer is added at the same time. Irrigation is not often practiced in this country, except in the arid districts of the West, and occasionally, with the early crop, near a few of our large cities. In Europe, where labor is cheap, it is often resorted to, even where the water has to be carried by hand. Early in the season, if irrigation is needed, once a week is frequent enough to apply the water, but while the plants are heading it may be applied with advantage every day if the weather is dry.

BLANCHING THE HEADS.

The value of cauliflowers for use or market depends almost entirely on their being white and tender. To have them remain in this condition until fully matured, they must be protected from the sun. Heads which are left exposed become yellow in color, or even brownish purple if the sun is very hot. Such heads also acquire a strong, disagreeable flavor.

There are various ways of covering the heads, but it is nearly always done with the leaves of the plant. Early in the season, when the weather is dry and warm, the work may be done during the heat of the day by lapping the leaves, one after another, over the head until it is sufficiently covered, tucking the last leaf under to hold all in place. Or the leaves may be fastened with a butcher's skewer, or any sharp stick. In Florida, orange thorns are employed for this purpose. Care must be taken not to confine the heads too closely, or they will grow out of shape, besides being liable to heat and become spotted. Later in the season, when the weather is cool and damp, the leaves will be too stiff to be bent down, and the head must then be protected either by placing over it leaves broken from the outer part of the plant, or from stumps from which the heads have already been cut, or by tying the leaves together above the head. The latter is the usual method, rye straw or bast matting being generally used for the purpose. Merely breaking down the inner leaves upon the head is unsatisfactory, as the growth, both of the leaves and the head, soon causes the head to become exposed.

The artificial blanching of the head is most important early in the season, while the sun is hot, and the field should then be gone over as often as every other day for this purpose, taking two rows at a time. Later in the season, during damp, cloudy weather, heads will sometimes reach full size and still be of good color though entirely exposed. It is unsafe to leave them in this way, however, as a little change in color seriously affects their market value. Covering the heads appears also to cause them to grow larger and remain solid longer than they otherwise would, particularly early in the season.

PROTECTING FROM FROST.

Another object, late in the season, in covering the heads, is to protect them from frost. A frosted cauliflower is practically worthless for market, as it is nearly certain to turn black on the surface after one or two days' exposure. Freezing, in fact, is one of the most frequent sources of loss on cauliflowers late in the season, and as this is the most favorable time of the year for them to head, it is necessary to take particular care to guard against loss from this cause. We frequently have a few hard frosts early in October, which spoil such heads as are nearly mature, unless they have been protected. After this there may be a month or more of good weather, during which the bulk of the crop may come to maturity. The heads are protected from frost in the same manner as from the sun, but it is best not to have the leaves lie directly on the head. Protection is particularly needed as the heads approach maturity, as they are then more easily injured than while small. Heads which are well covered will usually stand eight or ten degrees of frost without injury, depending on the amount of cloudiness and moisture present. In cool, moist, cloudy weather, frosted heads will sometimes recover and show no injury. It is even possible for heads to become frozen solid and come out in good condition, but this rarely occurs, and requires that the thawing take place in the most favorable manner possible. Cutting the frozen heads with their leaves, throwing them in shallow heaps upon the ground, and covering with straw, will sometimes bring them out in good condition; also throwing them into water but little above the freezing point. The safest way, however, if possible, is to cook the heads at once, putting the frozen heads directly into boiling water. Treated in this manner they exhibit little or no effect of the freezing.