On occasion I end up burning some oak branches in my firepit, which gives me some ash that I typically throw out. At times I have heard it may be beneficial to use it in the lawn, although I already have suspicions that my lawn is slightly acidic but still am not sure about that. We have a lot of oak trees and I have noticed that the azaeleas, blueberries and raspberries we have grown in our yard seem to do really well. With landscaping I am still learning what acidic and alkaline mean in terms of effects with the yard, and what grows best where (like the patches of moss I have).
I was wondering if its useful to use wood ash from the limbs and branches I sometimes burn to target certain areas and help improve my lawn. I am planning on adding it to the composter and in the garden plot in the fall (I already missed my spring additions), is this a useful idea or will I make things worse?