Water lily 'Black Princess' redA tropical pond! That's what we get with the water lily 'Black Princess' (Nymphaea). Lay out the dark red flowers in the sun and they'll turn almost black! Plant this perennial water lily in the spring. The flowers bloom in the summer. The aquatic plant is very easy to care for. We maintain a minimum planting depth of 30 cm. Just remove the older leaves in the autumn. Put the lily in a sunny spot.