Should spinach be harvested by removing the outer, older leaves or by pulling the entire plant?
A. This depends on whether it is a spring or fall-planted crop. In the spring, spinach will go to seed quickly so the best harvesting method is to pull the entire plant. When planting in early fall for winter harvesting, harvest the outer leaves and allow the plant to continue to grow and produce additional foliage. 4. Q. I’ve heard that spinach is extremely high in minerals and vitamins but also contains high levels of something which can cause problems. Is there any truth to this? A. Spinach contains high concentrations of oxalic acid which can interfere with the utilization of calcium or magnesium in the diet. The same is true for rhubarb and Swiss chard. 5. Q. Can New Zealand spinach be grown successfully? A. Yes. New Zealand spinach is a low-growing, groundcover plant which spreads 3 to 5 feet. New Zealand spinach should be started indoors in peat pots and transplanted after danger of frost in the spring. Young, tender stems and leaves can be harvested through the summer in most a
