stay away from Timberline topsoil, this crack is 10% dirt 90% bark and rock/sand.
after my 3 dry going to my 4 wet all i have left is sand/rock. even the sand/rock starting to look clear like buying a bag of sand from lowes.
I did found some Hapi-Gro topsoil from lowes.com not sure if its good to use. not enought info online.