It also contains levels of oxalate and should not be eaten by people who suffer from kidney stones. Silverbeet production is discussed in a separate Farmnote. The remainder of this Farmnote refers to the production of English spinach. Climate In Perth, the best quality spinach is produced from May to October, but with selected varieties, spinach is marketed all year. Spinach is fairly resistant to frosts.
High temperatures cause yellowing of the older leaves.
Soil Spinach can be grown on a wide range of soils, providing they are well-drained. It grows well on the soils of the Swan Coastal Plain. It is very sensitive to acid conditions. To avoid diseases, rotate crops if possible to give an interval of more than four years between spinach crops on the same ground. Varieties Hybrid varieties are used extensively.