Myriophyllum spicatum (Spiked Water Milfoil)

A true oxygenator, this plant remains under the water. It has reddish foliage in whorls of four. It can grow very deep but is best established in shallower water and allowed to acclimatise gradually.

It grows in still or slow-moving water. It can be dropped in pond as a weighted bunch but benefits from being planted in soil. Once established this plant can grow as deep as 3m.

• Full sun to part shade
  
• Flowers May to June