Amaranthus hypochondriacus or Prince of Wales Feather is a ANNUAL growing to 1.2 m (4ft) by 0.5 m (1ft 8in).
It is frost tender. It is in leaf 10-Apr It is in flower from Jul to August, and the seeds ripen from Aug to September. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by wind, self. The plant is self-fertile.