Bryonia dioica is a PERENNIAL CLIMBER growing to 3.5 m (11ft) by 3 m (9ft) at a fast rate.It is hardy to zone (UK) 6. It is in flower from May to June. The species is dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required). and is pollinated by Bees. The plant is not self-fertile.