What: Baptisia “Purple Smoke,” or wild indigo, is a vigorous and tough perennial named for the vibrant, smokey violet-blue and purple flowers that stand lupine-like above the plant on strong ...

As the sun rose on Madison, Wis., Thursday morning, the air quality was measured at 242 — a "very unhealthy" purple alert rating — due to smoke from Canada's wildfires. Madison wasn't alone ...