Propagation
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[12].
Cuttings of ripe wood, October/November in a frame.Cultivation
Prefers a sound loamy neutral soil[1][14]. Tolerates acid and moderately alkaline soils[15]. Succeeds in semi-shade but full sun is best for fruit production[14]. Prefers a sheltered position[14].
A very hardy plant, tolerating temperatures down to -30°c or more, but the young spring growth is susceptible to frost damage[16]. Some cultivars are said to tolerate temperatures down to about -50°c when fully dormant[16]. 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[5]. Plants are usually dioecious but the cultivar 'Issai' is self-fertile[14]. A polymorphic species[6]. Fruits are formed on second year wood and also on fruit spurs on older wood[13], any pruning is best carried out in the winter[17]. Plants only flower when grown in warm climates[15]. This species flowers well in gardens in the south and west of Britain[17], the small flowers being sweetly scented[18]. This is a climbing plant, supporting itself by twining around branches etc[14]. Male and female plants must usually be grown if seed is required.
Plants in this genus are notably resistant to honey fungus[14].