How to Prune waterlily 'Pygmaea Rubra'?
Deadhead and remove yellow leaves regularly

waterlily 'Pygmaea Rubra' · Nymphaea 'Pygmaea Rubra'
Grow in undisturbed water in full sun. Plant in baskets in loamy soil with crowns just below soil surface and covered with pea shingle. Position basket so that it is covered by 8-10cm of water; when the plants establish lower the plants to twice the initial planting depth. Feed during the growing season with a proprietary aquatic fertiliser at the manufacturer's recommended rate
Deadhead and remove yellow leaves regularly