Seven-Foot Mystery Plant in Washington: Hibiscus or Malva?

Seven-Foot Mystery Plant in Washington: Hibiscus or Malva?

A gardener in Olympia, WA, had a plant just over 7 feet tall from wildflower seeds, same color and leaves as another unidentified 8-foot plant. No one had identified it.

Expert Request

The expert asked for a photo, especially seeds/seed pods, flower close-up (petal count, stamens), leaf attachment. In their reference photo, two leaf types were visible with another plant in background. They asked if this plant only had big long-fingered leaves or other shapes. Other possibilities: Hibiscus or Malva.