These are crops that have the name spinach in them but are not actually a true spinach. They have different tastes and textures. These are heat loving crops which is typically a difficult time to get true spinach. Plant close together but be prepared to spend time picking the leaves.
Can be planted close together for baby spinach or 6-12 inches for larger heads. Likes the cooler weather. Harvest when you are hungry.
Very hardy. Must be planted as soon as the ground can be worked in the spring to avoid early bolting. Heat, crowding and long day-length (over 14 hours) trigger premature bolting. To retard bolting, avoid hot-weather planting, use wider spacing and irrigate or use shade cloth.