The berries will only grow on the 2 year old canes of their thorny bushes. Older canes are pruned away.
A single Sunberry bush will produce up to 25 pounds (11 kg) of fruit per bush. As for the flavour, while some promoters include the somewhat standard phrase “excellent flavour,” many other sources only grant faint praise, calling the flavour “mild.”
Sunberries are a cross between rubus ursinun and a “Malling Jewel” raspberry variety seedling.