Description
Large, frost tender (min. +10°C), deciduous aquatic perennial (H 50-150 cm, W up to 150 cm). Roots attached into the soil, leaves and flowers floating on surface, long-petioled. Leaves with long petioles, almost round (15-30 cm), heart-shaped at the base, smooth, glossy, dark green, floating. Flowers with numerous petals, cup-shaped (10-20 cm), blue-violet to dark violet with yellow center, slightly lifted above the surface. Flowering period: June-September. It grows well in still water, 50-120 cm deep. Attracts some water animals and insects. Not winter hardy.