Garden Pests and Diseases: Are the potworms eating my Columbine? If not, what is?, 1 by kTalia

kTalia wrote:
After the construction I mixed about 4 inches of Eco Compost with the native soil and then filled the rest with a mix of Eco Compost and potting soil from old patio pots of mine and family and friends. On top of that I put 4 inches of small pine bark mulch. So I dug down and here's what it looks like, it was about 10 inches down to the native mix of clay. I couldn't go much further because I started hitting root structure from the Linden which is about 14 feet to the right of the whole.