I am putting in an orchard and need to do raised beds for my blueberries.
I live in Ohio, so we have heavy clay soil. We decided to do 12" raised beds for our 18 blueberry plants. These varieties grow 4-5 ft high and 4 ft in diameter, spacing should be be 4-5 ft between plants. We are doing to rows of 9 (18 plants total).
Soil needs to be acidic, 4.5 -5 pH.
Question is: how much sphagnum do we need to used to change the pH? And should I use pelleted sulfur?