Question for the people that plant/grow trees. I have about 200 Norway Spruce trees. They range from being planted about 5 years ago to some just being planted this year. Does anyone here fertilize them or just let them grow? If you fertilize them, what do you use and how is it applied? Thanks for your help

I have an instrument made just for what you may be wanting. Has a long tube designed to put the fertilizer at the root ball. got it with some auction stuff i bought years ago. hooks to a garden hose if i remember correctly.
are you anywhere near Mt Pleasant?
just

I'm about 2 1/2 hours away from you according to Google. I'm up in Clayton County near Elkader/Volga. My plan is to get a hammer drill and a ground auger. I could use it for coyote trapping also. I don't know if you're going to the convention in Charles City but I would probably be interested in it if you want to part with it.

Used to use miracid seemed to work.