1.5 Gallon. Symphyotrichum oblongifolium (Nutt.) G.L. Nesom Aromatic Aster, Aromatic American Aster, Fall Aster, Wild Blue Aster, Shale Aster Asteraceae (Aster Family) Synonym(s): Aster kumleinii, Aster oblongifolius, Aster oblongifolius var. angustatus, Aster oblongifolius var. orientis, Aster oblongifolius var. rigidulus, Lasallea oblongifolia, Virgulus oblongifolius USDA Symbol: syob USDA Native Status: L48 (N) This perennial’s rigid stems, usually less than 20 in. tall, are much-branched from the base. The narrow leaves and stems are sparsely covered with short hairs. Flower heads (capitula) are composed of about 30 pistillate and fertile ray florets with rose, lavender-blue or purple laminae surrounding 25-50 yellow bisexual and fertile disc florets, maturing brown or purplish.
