Plants are thorny
Bushes have trailing canes
Fruit weight is 10 g
Berries have a oblong shape
Fruiting habit - floricane fruiting (summer-bearing)
Begins to bloom in the first week of May
Harvest season starts in the third week of June
Productivity is 5 kg per plant
Cold hardiness is moderate
Country of origin - New Zealand
Current status - cultivated (actual)
Karaka Black variety was bred for fresh market, processing and private gardening. Stems of Karaka are trailing and have prickles. Canes are medium vigorous, length is from 3 to 5 m. Moderate plant vigor makes it appropriate to put this cultivar at 1 m spacing to ensure a high yield.
In a cold climate Karaka Black is well suited to tunnel production of fruit for fresh market. This variety has very long fruiting season, produces high quality berries for six to eight weeks. The berries are well displayed and are very easy to pick. The dark black fruit has a long cylindrical-conical shape, is very firm and very shiny. The flavor is likened to a mild blackberry, and may be somewhat acidic when picked slightly under-ripe or grown in a cool climate.
Fruit size is large, with an average weight of 10-11 g. Shelf life of the fruit is outstanding.
Fruit yield of Karaka Black is high, approximately 15 t/ha, compared to the varieties Silvan at 13 t/ha and Waldo at 10 t/ha. In trials in New Zealand, Karaka Black has achieved yields of over 25 t/ha.
Plants of Karaka Black has moderate disease resistance to downy mildew (peronospora sparsa).