Flowering Shrubs and Trees Indigobush, False Indigo, Bastard Indigo, River Locust

Garden Design Master Class

Characteristics Flowering Shrubs and Trees Indigobush, False Indigo, Bastard Indigo, River Locust. Height of plant (cm) 150-200 cm. Flower size small. Fragrant flower fragrance. Shelter in winter shelter is not required. Growth rate fast growing. Flower colour lilac, purple. Landscape use specimen, hedge. Cold hardiness zone 2 (-45 to -40°c), 3 (-40 to -34°c), 4 (-34 to -29°c), 5 (-29 to -23°c), 6 (-23 to -18°c), 7 (-18 to -12°c), 8 (-12 to -7°c). Timing of flowering july. Light needs full sun. Water needs moderate. Not poisonous plant. Frost resistance. Neutral soil. Sandy loam soil.