So we moved to a new home last week. There are two different trees, one in the backyard, one in the front. However, both trees have some oil or sap like things on the leaves, and what's worse, wind spreads the oil all over my car or anything under the trees. See attached picture please. What is causing the oil? The trees themselves or bugs? Are the white dots on the leaves bug eggs? I do see many bugs on the trees. Thx
You are correct! You've got soft bodied insects that suck from the plants. Could be a number of types; aphids, white fly, etc. The sticky stuff is honeydew...the excrement from insects sucking on your plants. The only solution is spraying NEEM, mixed correctly and only spraying at night. Do not want to harm a single bee. Or hiring a company to annually spray your trees. Notice through the season how long this event takes place. And we need to know where it is you live on this planet. These insects will not kill your plants but icky sticky. Perhaps just a plastic cover overnight will solve your problems. Less expensive anyhoo.