Last year I planted 6 so I knew what I was doing this year. My soil is quite clay so I first removed 3 yards of soil, tons of roots and other buried things. I had my garden soil already and mixed in some loam and soil acidifier.
First I started with 6 inches of leaves on the bottom of the trench. Then I piled the soil mix in the spot the bushes would be buried and stuck the plant on top. Filled in the area around the pile with organic mulch, this keeps the plant from getting water logged and retains moisture during dry periods. 8 different types of blueberries are planted now. Along with cherries, raspberries, strawberries and soon an apple tree and some elderberry bushes. All for my son and the local wildlife to enjoy. Took me about 4 hours to do.
It’s just my yard. That spot had a 40ft row of overgrown honeysuckles. They had to have been 20ft tall. So I also wanted to remove the enormous root balls.