Given their organic base, most of our products can typically be mixed with anything else that you’re applying (i.e. fungicides, sulfur, calcium, boron, zinc, etc.) without any negative impact on the mixed product performance, our product’s performance or the plant itself. We don’t recommend mixing our foliar fertilizers with oils as it’s counter intuitive to create a barrier to absorption or penetration.  We haven’t had any issues with compatibility including low volume sprays at 20 gallons per acre all the way up to higher volumes at 100 gallons per acre.