Amsonia

“Amsonia, also known by the common name of blue star, is a herbaceous perennial” — How to Grow Amsonia Blue Star Perennial

“Too much shade may cause the plant to flop” — Amsonia tabernaemontana (Blue Dogbane, Blue Star, Blue Star Flower, Eastern Bluestar, Woodland Bluestar)

“The blue star perennial prefers regular water, but is somewhat drought tolerant once established.” — How to Grow Amsonia Blue Star Perennial

“Amsonia plants prefer to be planted in well-draining soil with a pH range of 5.0 to 7.5.” — Amsonia Flowers: Characteristics and Growing Tips - PlantNative.org

“‘Storm Cloud’ Bluestar (Amsonia tabernaemontana), known as eastern blue star, is native to the eastern United States. Dark, nearly black stems emerge in early spring, bearing willowy olive-green leaves with silvery veins. Light periwinkle flowers bloom in profusion for 4 to 6 weeks from late spring ” — How to Grow Amsonia Blue Star Perennial

“space plants 2 to 3 feet apart” — How to Grow Amsonia Blue Star Perennial

“plants grow 2 to 3 feet tall and 2 to 3 feet wide” — How to Grow Amsonia Blue Star Perennial

“You can either purchase seeds or collect them directly from a plant near the end of summer.” — How to Grow and Care for Amsonia (Blue Star) | Gardener’s Path

“In spring, after the threat of frost has passed, or in early fall” — Amsonia: A Growing Guide for Blue Star | Garden Design

“My best gauge for knowing when to harvest amsonia seeds is based on how I’m feeling about the summer heat.” — How to Grow and Care for Amsonia (Blue Star) | Gardener’s Path

“due to the foliage containing a toxic white latex” — Amsonia tabernaemontana (Blue Dogbane, Blue Star, Blue Star Flower, Eastern Bluestar, Woodland Bluestar)