u/Environmental-Alps96

Hi so me and my fiance bought these un glossed white ceramics from Michael’s to paint. So we did that part and now im just wondering would i need to waterproof these or something before potting plants in them? I applied some mod podge puzzle glue on a bit of the inside and a bit of the outside of the orange one just to see. As expected it just feels like dried glue so im assuming thats the wrong move. Any help is appreciated. Also all the paints we used are acrylic.