Mar 26, 2012 | 5:55 AM PST
I have created this beautiful barrel garden (3D growing), but the back of the barrel doesn't get much sun, and apparently I have been overwatering it because there is mold in some of my plant cups. I was thinking of making something reflective to get more sunlight to the back of the barrel, any other suggestions? I was thinking a car window shade because I have seen some that are reflective.