For the best attributes of amsonia, look no further—they’re here in Amsonia x ‘Grand Slam’ PPAF. Intermediate foliage grows in a reserved habit, and heavy blooming plants have bluer flowers on dark purpled stems. Blooms begin in mid-to-late May on 18 to 24-inch stems that lengthen to 36 to 42 inches after flowering. Plants grow 36 to 42 inches wide; they thrive in full sun and most any soil type.