What Happens When Plants Get Too Much Potassium?
Potassium Potassium is one of the big three nutrients plants receive from soil and fertilizer; it is the third number in the NPK (nitrogen – phosphorus – potassium) ratio listed on commercial fertilizers. Once absorbed, potassium improves the overall hardiness of the plant by improving the rigidity of the stalks and increasing disease resistance. Thus, potassium is important in helping the plant overcome drought stress and survive winter. There is no level at which potassium becomes toxic to plants. But when plants get too much potassium, the absorption of other nutrients is inhibited, which leads to the symptoms caused by the deficiency of these nutrients Nitrogen Deficiency The primary risk of too much potassium is a nitrogen deficiency. This will stunt the growth of the plant and lead to chlorosis, a yellowing of the foliage that first appears on older growth lower on the stem. The veins on the leaves will have a red tint. Newer leaves will be smaller in size. These effects can be c
