Too Much Phosphate
...tion: the bad effects of too much phosphate. An overabundance of phosphate can interfere with a plant’s ability to uptake iron resulting in interveinal chlorosis, a yellowing of the leaves between the veins. So adding fertilizer that contains phosphate to soil that doesn’t need it is a waste of money, damages the environment and can kill your plants. Of all the soils I’ve tested in Los Angeles, all are already high in phospha...