How long it will last is not known. It also depends on how far gone the tree is. We feel is that as long as the tree is getting a good nutrition program it should be able to produce healthy fruit for quite a while. If someone can regain the production of a tree for a few years instead of replacing it that is a win for the grower. Also, we feel there will be a cure for greening so if we can sustain until that happens then that would be best.
As far as using our products forever of course that would be our goal but that is not the case or the point. It is the nutrition that is needed to create a healthy plant and build up its defenses and also allow the plants nutrients to flow again. We have just had good sucess thats all. I hope tht answers your question.
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Scott Silvest