... 'White' and 'Yellow'. Last summer, we ran into a predicament where sap was dripping off the leaves of a nearby tree. We inspire people to plant, nurture, and celebrate trees. It’s not. Black walnut (Juglans nigra) The black walnut tree is a valuable timber species, whose sap flows in autumn, winter, and spring. Butternut, white walnut (Juglans cinerea) The butternut produces a sap that yields roughly 2% sugar – similar to sugar maples. University of Arkansas Division of Agriculture Cooperative Extension Service Horticulture - Tree Identification - Choose sap type, milky or clear. Sap dripping off leaves of tree. Fig and ficus tree also leak sap, which can cause skin irritation in sensitive people, if touched. ... Also, if the figs are taken from the tree prematurely, the white milky fluid that discharges from the stem can transfer to a person's hands, eyes or mouth. According to David Nellis, author of “Poisonous Plants and Animals of Florida and the Caribbean,” people may experience “symptoms such as a rash and headache to acute dermatitis, severe breathing problems and temporary, painful blindness,” from contact with its sap.. Travelers are also warned not to take shelter from this tree … The tree’s milky, white sap is highly caustic. This is because figs contain laxative, particularly its sap. The Arbor Day Foundation is a 501(c)(3) nonprofit conservation and education organization. The timing and total volume of sap are also comparable to sugar maples. Unfortunately, this covered my car in a sticky substance, which led to the accumulation of dirt, as well as the arrival of flies, bees, wasps and other annoying insects. Numerous small flows higher up on the trunk may be symptoms of bark beetle attack. I have heard this "sap" is poisonous, and am scared to make dinner or handle my parrot till I get it off my hands. Some common plants that release milky sap are calotropis, milkweed, papaya, plants of euphorbia genus, and balloon flower. I tried washing them with soap and water like 10 times, and I can not get it off. This fluid can be very irritating and should be washed away as soon as possible. In the process, I got the white milky stuff that it "bleeds" all over my hands. Sap is the plant equivalent of blood. Yellow and White Berries This symptom is often referred to as "resinosus". Sap dripping from Douglas-fir trees is a common symptom with a variety of possible explanations. The tree produces a thick, milky sap, which oozes out of everything - the bark, the leaves and even the fruit - and can cause severe, burn-like blisters if it comes into contact with the skin. It feels like elmers glue when it first starts to dry and gets tacky. The sap can cause burning to the skin and if it comes into contact with your eyes then you may experience a burning sensation, swelling and temporary loss of vision for up to two weeks. The other answers correctly mention that the white fluid is latex, but then incorrectly state that latex is sap. Javascript must be enabled for the correct page display Euphorbias have a particularly milky sap, which is extremely irritating to the skin and eyes. Its milky white sap contains phorbol and other skin irritants, producing strong allergic contact dermatitis. Learn more about milky sap plants. [10] Standing beneath the tree during rain will cause blistering of the skin from mere contact with this liquid: even a small drop of rain with the milky substance in it will cause the skin to blister. One or just a few high-volume resin flows down low on the trunk often indicate a root disease or wood rot fungus. The glossy-leaved trees, which may reach over 65 feet in height, have spiked flowers with a pungent smell, while a white, milky sap will flow from any damaged surface of the plant, whether scratched, poked or snapped. A million members, donors, and partners support our programs to make our world greener and healthier.