Water depth: 2.5-5cm (1-2in)
Site: partial shade
Houttuynia cordata is a hardy herbaceous perennial which thrives in moist soil or shallow water. Un-like most aquatics, it benefits from dappled shade. It spreads rapidly by underground, and can be invasive.
The upright, bright red stems bear pointed, heart-shaped. These are strongly aromatic when bruised, and have a blue-green, rather metallic appearance, sometimes suffused with red.
In summer, small spikes of white flowers appear, each with tour white bracts. Popular varieties include “Plena’, with double flowers, and ‘Variegata with brilliant red, green and gold leaves, but tew (lowers.
Plant in spring or autumn in moist soil or shallow water to a depth of 5cm (2in). Dappled shade is beneficial. Plant dormant rhizomes horizontally, 7.5cm (3in) deep, and-grown plants at pot depth.
Propagation: Divide rhizomes into pieces, each with a growing point or developed shoot, during early to mid spring. Pot in John InnesNo 2 and grow on until well roofed, then transplant to the growing .
Pests and diseases: Trouble tree.