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This plant is said to grow outdoors in the following regions:
Menifee, California
Saint Charles, Illinois
Cape May, New Jersey
Wallkill, New York
Eastern Bluestar, Woodland Blue Star, Willow Amsonia, Blue Dogbane Amsonia tabernaemontana var. salicifolia is native to Texas and other States.
Eastern Bluestar, Woodland Blue Star, Willow Amsonia, Blue Dogbane Amsonia tabernaemontana var. salicifolia is native to Texas and other States.