Characteristics Garden Flowers Hypericum olimpicum. Height of plant (cm) 5-30 cm. Fragrant flower no fragrance. Flower size large. Type of stem erect. Method of cultivation non seedlings. Shelter in winter shelter is not required. Not poisonous plant. Water needs low, moderate. Light needs full sun. Timing of flowering august, july. Cold hardiness zone 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), 9 (-7 to -1°C). Landscape use flowerbed, border, rock garden. Neutral soil. Flower color yellow. Frost resistance. Lifetime perennial. Loamy soil.
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