Category:Guttation

Guttation can appear to look like dew, yet the two are different. The rest of the leaf may be dry, but drops of xylem sap may be present on tips of leaves of tomato, potato, strawberry, and other varieties of plants. When there is too much root pressure, it may force some water to exude through special leaf tip or edge structures, which are special stomata or hydathodes, and form drops of xylem sap. It differs from dew in that it contains water, inorganic ions, and a number of organic chemicals. It can be indicative of too much moisture in the soil. There may be a white crust residue after the water evaporates which contains sugars, mineral nutrients, and potassium.