Sow in February or early in March on a mild hotbed for theearliest crop. Prick the seedlings off into shallow boxes as soon as
they are large enough to handle, and keep them rather close and warm
until they are established. Towards
the end of March prick them out in
rows in a frame, setting them 6 in. apart each way, and early in
May transfer to rather shallow trenches, protecting them from night
frosts. For main and late crops sow in a cold frame in April and plant
out in June or July, 9 in. apart, in trenches 3 ft. distant from each
other, 9 in. wide, and 18 in. deep, pressing the soil firmly round the
roots. Earthing up should be delayed until the plants are nearly full
grown, and should be done gradually; but let the whole be completed
before the autumn is far advanced. When preparing the trench plenty of
manure should be dug into the soil. Water liberally until earthed up
to ensure crisp, solid hearts, and an occasional application of liquid
manure will benefit the plants. During winter protect from frost with
straw, or other suitable material.
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