Originally Posted by OKbonsai

I fertilize with an injector system. I have to inject sulfuric acid because of my hard water which in turn also lowers my ph from 7 to 5.6. It was also recommended to add fertilizer. So when I water, which is usually everyday I also fertilize. Of course it has rained 18 straight days now so I haven't had to water for a while. The difference between you and me is, your trees are a hobby and my are a business. I want my trees to get big fast you are maintaining. Although my finished trees are watered the same. I don't expect you to understand why I do what I do. I have excellant results so I guess that is all that matters in my case. And to try to explain would probably just end up getting my blood pressure up. I went one season not fertilizing everyday, as per John of Vonsgardens, and the trees suffered in my opinion. So this is just another example of where what I do may not work for someone else. Is it overkill, could be but I have had 8 years to watch the results and I am not going to change.
And not only do I use a liquid fertilizer every watering I also use organic cakes that I make, on all my pines.