No it will be fine. It is just an Oil based product. It could possibly inhibit the growth of the plants if a significant amount gets on the leaves, as oil with effect the photosynthesis process.Also if these are vegetable plants, be sure to wash any vegetables that may have had direct contact with the oil.Other than this, leave everything alone, it will break down on its own and be fine. To give an example........I have a couple of tractors myself. I have had a hydraulic filters break open and dump a gallon or 2 of hydraulic oil on the grass. It kills the grass in this amount, however within a month the grass is regrowing. A light mist is not growing to cause any hazards for you.Please don't forget to rate me and have a great day.