Question: Do your products contain all the minerals necessary to successfully grow citrus trees? Thanks, James. Answer: James, Our products produce great results on citrus. Our approach is a little different in that the John & Bob's system does have significant amounts of minerals which positively impact plant performance, but even more important is that the minerals feed complex microbiological life in the soil which will benefit citrus in every way----max. sugar content and abundance of fruit, resistance to pests and disease, minimize watering, etc. John