I would spread those ashes as evenly as possible and then disc it into your top soil. It would help your soil pH, especially with the acidic properties of pine.
If you don’t mind me asking, why don’t you have a lumber company come out and clear the land for you? Just curious on your thought on this, thank you kindly!
Not enough timber to make it worthwhile for them. You need 15-20 acres of mature hardwood. But you still have all the mess to clean up when they are done.
