Blackcurrants are produced mainly in Tasmania, specifically for fruit cordial, and are a good source of vitamin C.
They are similar to Red currants with the exception of producing their berries on the previous seasons growth. This means the pruning regime is slightly different to that of a red currant.
Pruning of the canes will encourage growth in the following season. This means that the new shoots would grow and the fruit would be produced on the previous seasons growth.
Cut the newly planted bush to two buds above the soil level. The bush should then start to form a clump by producing new suckers at its base.
After two years you can prune the older canes at the base as your blackcurrant bush should be fairly established.
You should leave 6-8 upward growing shoots every winter and keep these shoots for roughly 3 years. This means the centre of the bush should remain fairly open, similar to the red currant.
Source: The Berry Book by Clive Stone
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