Cuttings of softwood as soon as ready in spring in a frame[K]. Cuttings of half-ripe wood, July/August in a frame. Very high percentage.Cuttings of ripe wood, October/November in a frame.
A very hardy plant, tolerating temperatures down to -30°c or more, but the young spring growth is susceptible to frost damage. Some cultivars are said to tolerate temperatures down to about -50°c when fully dormant. This species is often cultivated for its edible fruit and it is increasingly being seen as having potential in Britain. There are some named varieties. Plants are usually dioecious but the cultivar 'Issai' is self-fertile. A polymorphic species. Fruits are formed on second year wood and also on fruit spurs on older wood, any pruning is best carried out in the winter. Plants only flower when grown in warm climates. This species flowers well in gardens in the south and west of Britain, the small flowers being sweetly scented. This is a climbing plant, supporting itself by twining around branches etc. Male and female plants must usually be grown if seed is required.
Plants in this genus are notably resistant to honey fungus.