A raised garden bed

A raised garden bed

Okay I am making a raised garden bed on a slight hill. I will need to flatten the area out and I figured I could just used fill dirt. But I was also wondering about the typical ratio of fill dirt to top soil for my raised bed. It's going to be 20" tall so I know it would be costly to do all top soil but I of course want to ensure fertile soil. Any suggestions? Thanks!
babies.

babies.

my garden..then and now..

my garden..then and now..

between the cracks

between the cracks

Updated Look

Updated Look

this morning…

this morning…

knobs: continued…

knobs: continued…