We found this squarish rock on the hillside, hoping it would be softer than it was... but my dear, sweet BF ground out a shallow dish for me anyway and cut a drain channel. Wicked thunderstorm washed away most of the baby rollers and rocks shortly after I 'planted' them, but I scooped up what was left on the steps and it looks like I can finally say they are alive, growing, and holding themselves in now