Which is a more sustainable choice: hardwood mulch or rock?

— Julia Tullahoma, TN

Answered by Aaron Roy Coffeen on March 18, 2010

What is a good drought-tolerant turf suitable for the Denver, CO area?

— Cameron P Kruger AIA Denver, CO

Answered by Aaron Roy Coffeen on March 15, 2010

How can I create a permeable pathway for my water-wise garden?

— Stan Brody, Upland, CA

Answered by Richard Heller on March 20, 2009