Surrounding tissue browns and dies. A few fungicides are available for use in spinach produced on a commercial scale. There are no fungicides registered for use by home gardeners on spinach. Insect pests include the green peach aphid, seed corn maggot, cabbage looper, cucumber beetles and the spinach leaf miner. Aphids can be a major problem because they transmit virus to the spinach and are difficult to control, especially in the savoyed leaves.
Spinach is shallow rooted.
Cultivation to remove weeds must be shallow to minimize damage to the roots. A few herbicides are available for commercial production. For smaller plantings, hand weeding is recommended. Contact your county Cooperative Extension office for methods to control insects, weeds and diseases in larger plantings. Harvesting and Storage Spinach can be harvested until seedstalk formation.