quickrete

  1. W

    Lava rock brand

    Hello - My 4 15 gallon pots call for 5 gallons of lava rock in each pot. I did get 6 bags of the quickrete brand below, but im wondering are these even ment to mix in with soil? The rocks are really big and have been smashing them, but a lot of the time they just turn to dust. So I'm not...