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Characteristics Garden Flowers Amberboa, sweet sultan. Height of plant (cm) 30-70 cm. Type of stem erect. Fragrant flower fragrance. Flower size large. Shelter in winter shelter is not required. Landscape use flowerbed, specimen, border. Flower color lilac, pink, yellow, white. Method of cultivation seedling. Cold hardiness zone 6 (-23 to -18°C), 7 (-18 to -12°C), 8 (-12 to -7°C), 9 (-7 to -1°C), 10 (-1 to +4°C). Timing of flowering autumn, august, july, june. Light needs full sun. Water needs moderate. Lifetime annual. Not poisonous plant. Sandy loam soil. Neutral soil. Frost resistance.