We even had a 'rock picker" to help the gardeners, it dug abut 18 inches deep, dug everything up, the dirt fell through a barred web back to where it came from, the rocks, up 30 to 36 inches, carried on to a side conveyor into a truck.
Worked perfectly, just come back ever third or fourth year to get the next crop of stones.
Stones grow better that weeds, and are harder to get rid off.
We even had a 'rock picker" to help the gardeners, it dug abut 18 inches deep, dug everything up, the dirt fell through a barred web back to where it came from, the rocks, up 30 to 36 inches, carried on to a side conveyor into a truck.
Worked perfectly, just come back ever third or fourth year to get the next crop of stones.
Stones grow better that weeds, and are harder to get rid off.