The iron content of tropical leaf vegetables was moderately increased by adding 1 ppm Fe to the nutrient solution for sand culture which corrected moderate Fe deficiencies and enhanced leaf yield. Substantial amounts of Fe accumulated in leaves of plants supplied with 3 ppm Fe in the nutrient solution. The Cu and Mn content of the leaves was slightly influenced by the Fe supply but varied greatly with species of plant. Species differences in Fe content were most apparent with 3 ppm Fe in the nutrient solution.