Thoughts on iron
What are your thoughts on adding iron to the lawn? Is it "anti-organic"? Being a trace mineral, it doesn't strike me as being bad, in reasonable quantities when needed, but, I can't remember anyone discussing it from an organic point of view, so I thought I'd raise it.
I usually try to use greensand to add iron.
Also, is there any reason to not apply iron to a lawn in the warmer weather?