Spinacia oleracea 'Salad Fresh'

Spinach is known to be an excellent source of iron. This is partly true. Yes, it is true that spinach leaves have relatively high concentrations of iron when compared with vegetables and almost as high concentrations as meat. Unfortunately, much of the iron in spinach cannot be absorbed because it is either bound to another compound (such as oxalate, which spinach also has a high concentration of) or it is in a form that people have a hard time extracting from a food source and absorbing into our systems.