This section is from the book "A Dictionary Of Modern Gardening", by George William Johnson, David Landreth. Also available from Amazon: The Winter Harvest Handbook: Year Round Vegetable Production Using Deep Organic Techniques and Unheated Greenhouses.
Bank's (sloping), says Mr. Barnes, "Are of great advantage in bringing forth vegetation of all kinds at an early season in a healthy state, and in the greatest abundance. Another great advantage is their forming a boundary and shelter to the valleys, borders, or slips between them, dividing the quarters into any desired portions, for the succession of all vegetable crops, salads, etc. By cropping both sides, the season of the different articles is prolonged, and through their being placed in such a healthy situation, I find I can always secure abundance of salads, lettuce, endive, radishes, cauliflower, and cabbage-plants. The first early cabbage and peas I have planted in these sloping banks with great advantage. The win- ter endive being cleared and the slopes forked, a situation is provided for the, first out-door crops of carrots, turnips, radishes, etc. The slopes that are next cleared in succession make provision for the early dwarf kinds of French beans on the 60uth side; and late planted Windsor or other kinds of late beans are planted on the north side, which is found a good situation for them; besides forming a shelter to the others by breaking the cold winds.: Others are cropped with strawberries on both sides.
The slopes that are cleared latest in the spring, are cropped with late cauliflower, with the first planting of early Cape brocoli on the north side, and succession of other vegetables are kept up throughout the season. By constantly keeping the surface stirred, the crops are all to be seen in a healthy state, progressing ad-mirably in favourable weather throughout the winter months, and indeed, the whole season through.
"The advantage of forming sloping banks do not end in that derived from the variation of aspect, the healthiness and the prolongation of the crops, and in securing shelter; but there is a still greater advantage, by gaining a con-siderable extent of surface; thus, with one acre of land with a flat surface, it is an easy matter to increase it one-half, by the sloping bank system." - Gard. Journ.
 
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