Composting

How can I replace my Miracle Gro

I spent this past weekend visiting my Mother and daughter. The last morning the three of us enjoyed a walk through my Mother's garden. She has almost a half an acre of yard, part in a small orchard and the rest in lush gardens.
Last spring, my Mother decided she could no longer maintain her small garden pond. With the help of friends and some family members, they emptied the pond and pulled out the liner and other associated parts. They then filled the hole with a combination of compost and soil scraped off the orchard area in an effort to level it some.