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This article is about Ribes rubrum, commonly termed Redcurrant (Red currant). Whitecurrant (White currant) refers to the same species, but only to cultivars with white-coloured fruit. Red and white currants are discussed in this article.
Blackcurrant refers to a different specis, Ribes nigrum, which is discussed in a separate article (See: Blackcurrant).
Birds: Birds are likely to cause most problems. Birds often feed on the fruit crop. Redcurrants are a particular favourite of blackbirds in the UK. Whitecurrants and late ripening redcurrant cultivars are eaten less by birds. They may also damage buds. Nets can be used to cover the bushes over winter to prevent this.
Aphids: the Redcurrant Blister Aphid can cause large red "blisters" on the leaves of redcurrants in summer. It can also occur on whitecurrants, with less frequency. In blackcurrants this species of aphid causes yellow blisters. The pale yellow aphid colonies are located on the undersurface of the leaves and appear in spring and early summer. Plants should be checked regularly and sprayed with a organic control if any signs appear (see: Organic pesticides). Alternatively, in late June sideshoot tips can be removed (currants will require yearly pruning anyway to maximize yield). These RHS sources have more detail on currants with aphids.
Blackcurrant Gall Mites: Can also be a problem for redcurrants and whitecurrants.
Grey Mould (Botrytis):
- Bird, R (2011). A practical guide to growing vegetables fruit & herbs. Hermes House. ISBN 9781843098324.
- Crawford, M (2016). Creating a Forest Garden: working with nature to grow edible crops. Green Books. ISBN 9781900322621.
- Titchmarsh, A (2008). The kitchen gardener : grow your own fruit and veg. London BBC. ISBN 9781846072017.
- Brickell, C; Royal Horticultural Society (2012). Encyclopedia of Gardening. Dorling Kindersley. ISBN 9781409364658.