Harmony Blossom was named by her parents Joan Marie Witte;a graphic artist and schoolteacher; and Start Gregory Clark; environmental consultant, singer-songwriter and the man who started corporate sponsored residential curbside recycling. Her Grandfather Norbert F.

Witte was one of the NASA engineers who designed the first space shuttle. Her other Grandfather Russell Clark was a psychology professor at Yale University by age 28. Harmony has two brothers, Blue Morningstar Clark; and Shawn Peter Clark.