The plan provides for the cropping of a garden or allotment to produce a steady supply of vegetables to the kitchen in every week of the year. It was issued by the Ministry of Agriculture, Fisheries and Food who recommend that any alternative crop selected should mature at the same season as the crop displaced; otherwise, too much would be ready at one period and too little at another.
Catch cropping may be defined as securing a quick-maturing vegetable crop off ground which is unoccupied for a month or two. For example, early carrots can be sown in March on ground intended for planting out cabbages. Lettuces may be sown in celery trenches before the latter are actually planted. Radishes or broad beans can be sown between rows of potatoes and so on Intercropping is a rather loose term and there is probably no strict line of demarcation between this and catch cropping. Sowing carrots between early peas or marrows, or cauliflowers between later sowings, is usually termed intercropping. Sufficient space must always be left to get at the crops.