Green roofs becoming more common, but still can be a challenge

Don't miss Valerie Easton's article on green roofs. There have been demonstrations of green roofs at the Northwest Flower and Garden Show for the past couple of years, and sometimes there are even self-guided "green roof home tours" organized in the Seattle area.

Read Keep a green roof thriving with the right soil and plants
Valerie says "Gritty soils and plenty of drought-tolerant, native plants are the secret to a successful green roof"