currant bush are small fruit from the ribe family and are aboriginal to northerly Europe and Asia . They descend in three varieties : blood-red , white and black . chiefly used for crush and jelly , currants can be made into wine or combined with other fruit and bake into Proto-Indo European or tart , total a small zip to low acid fruits . Currant shrub experience few flora diseases ; all can be well identified and do by with fungicide .

Powdery Mildew

In pie-eyed outpouring weather , some red and white currant bushes can educate powdery mould . Plants affected by this fungal disease develop a tiny white coat of mildew spores . This is a modest disease that mainly affects the bush ’s appearance , but it will spread to currant fruit if not do by . gardener can treat currant bushes for powdery mildew with fungicide or horticultural oil ; they should check with local county filename extension official for a list of O.K. fungicides for their domain before plow .

Leaf Spot

folio spot get red or white currant bush foliage to become specked with calamitous or brown spots . As the infection worsens , leafage precipitate off the currant bush . The fungus can live in the soil and in dropped leaf , so gardeners should rake up leafage as they fall . deal for leaf spot with an approved fungicide .

Anthracnose

Anthracnose is a fungous disease of violent and white currant shrub similar to leaf spot . It causes tan spots with dark-skinned purple adumbrate to seem on foliage . As the contagion decline , leaves can turn yellow . Currant crotch hair affected with anthracnose become less generative and less vigorous . The infection can spread to the yield , make it to crack up exposed . Lime sulfur or copper - based antifungal can be used to prevent anthracnose infection if applied from the root of spring through summertime , which is the select time period of infection .

White Pine Blister Rust

Black currants formerly carried white pine blister rust . From 1920 to 1966 , black currant were banned in North America to protect the white pine universe . With the development of disease - resistive cultivars , the ban was lifted , but this character of currant bush is still rare . White pine blister rust fungus swear on two plant ( a blank true pine and a host tree , such as black currant bush ) to produce , and can wipe out the emcee plants . Gardeners may learn about this disease ; however , it does not regard cherry-red or white currants and should not affect black currents being sell on the market today .

Prevention

Keeping currant pubic hair clip on a regular basis helps ward off the fungal diseases anthracnose , leaf spot and powdery mould . Prune bushes in the spring when frost risk pass . withdraw bushed , diseased or damage branches . Then prune off offshoot that contract other limb . Clean up the canopy to kick upstairs air circulation by removing watery branches too thin to contain yield , old ramification with woody stems , and vertically growing branches .

References

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