Spinach PLANTING: Prefers cool soil to germinate. Begin planting in early spring, as soon as soil can be worked. Sow seeds 1/2″ deep. 1″ apart. Let Spinach grow to baby size, then pull plants until you have a 3″ spacing. Eat thin lings. Spinach can also be planted in the fall around the middle of September or anytime soil temperature has cooled down. HARVEST: Harvest spinach promptly when mature by cutting just below attachment. Older plants and hot weather will cause spinach to bolt or go to seed. You will need 1 oz of seed per 100′ row