My soil test indicate phosphorous is low on my lawn. To fix it, I thought of adding some bone meal. I think it's possible to get a big bag of it.

My question is how do much do you spread? Can I just load it up into my spreader and run around with it?

Secondly, I notice article indicating that bone meal should be spread in the fall. Is there some reason why I can't do it in spring to give time for the microbes to break down the bones?

Paul