Casey Boyter and Lauren Woodward Stanley explore green roof design and technology. Take a tour of Casey's personal green roof. Pick the right zinnia for you with Trisha Shirey's tips.

Get new ideas for summertime color with Christine and Bill Reid from Reid's Nursery. Trisha Shirey identifies lady bug life cycles.

Jeff Yarbrough from The Emerald Garden selects multi-tasking plants. Sweetpea Hoover from The Natural Gardener has tips for planting herbs.

Preview the Lady Bird Johnson Wildflower Center's "Gardens on Tour." John Dromgoole explains how to improve heavy clay soil.