** Answer ** This is a common problem for first-timers to stone walls. That is usually caused from using all soil to back - fill the wall. The first 6-12 inches behind the wall (depending on wall height) should be back - filled using crushed stone or small gravel up to the last course (row) of the wall. We recomend 1/4" crushed limestone. Then a layer of soil to finish off the top. This almost completly eliminates the "soil bleed through" You can correct this by removing some of the back - fill soil and installing the crushed stone or gravel. This can usually be done without disassembling the wall if care is taken and the wall is small. Thanks for The Question!