This section is from the book "The Gardener V3", by William Thomson. Also available from Amazon: The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener.
Sown in the open during the hot summer months, Spinach is certain to run to seed before it is of a serviceable size. In consequence of this, although there is no great demand for it, I still consider it advisable to grow a little on a north border, - not so much, however, for cooking, as the New Zealand Spinach is a capital substitute, but more especially for packing purposes. Vegetables have long been packed and sent to a great distance in Spinach, out of which they are taken comparatively fresh, and so also will cut-flowers if packed in it, and I strongly advise others to give the plan a trial. The cool succulent leaves, unlike other packing material, do not absorb moisture; on the contrary, they afford a certain amount, or at all events materially assist in its retention. Roses, each wrapped in a Spinach leaf, and closely packed in layers and shallow boxes, travel most satisfactorily, and so do many other kinds, including Stephanotis. Spinach at all times grows most luxuriantly in moderately rich soil, and manure should be freely dug into a north border.
The drills may be disposed a foot apart, and the young plants ought to be thinned out early.