Point taken KC. I guess this topic just hit a nerve
. Several years back I tried some 'All Organic' feed that a local nurseryman swore would never burn my trees, no matter what. I happily took the stuff home (coarse granules that looked sort of like large rodent droppings...) applied it as directed by the nurseryman (the packaging wasn't very informative as I recall) and left my trees in the care of my daughters while I was out of town on contract for a number of months that summer. Within the first few weeks I had a panicked phone call from my eldest saying several of my older trees had just sort of shrivelled up and died 'over night'. As the story finally came out, the girls had tried to be helpful by giving everything an extra dose of fertilizer and shortly thereafter the trees started dropping leaves and shrivelling up. By that time the damage was done and even after they scraped what was left of the fertilizer from the soil and soaked the pots to try to rinse out as much as they could several of my trees continued to get worse and eventually died before I was back home for a break.
Since that incident, I've been very leary about using organic fertilizer at all and even tend to underfeed rather than risk damage to my remaining trees.