The fungus can live in the soil and in dropped foliage, so gardeners should rake up leaves as they fall. Dioecious (separate male and female plants). It tends to fill out right to the ground and therefore doesn't necessarily require facer plants in front. Alpine currant's glossy, tri-lobed foliage is its only significant ornamental attribute. Fungal Disease White Pine Blister Rust (Cronartium ribicola) Wood Rots and Decays (Many genus and species involved) Anthracnose and leaf spots are potential problems. This plant is common in central and northern Europe (from Finland and Norway south to the Alps and Pyrenees). ter rust—Cronartium ribicolaJ.C. Fruit on female plants is an inedible, scarlet berry. Ribes is the only genus in the family Grossulariaceae There are very few such shrubs in western Europe. Scorch symptoms may differ between plant species, but it typically appears in July and August as a yellowing between leaf veins and along leaf margins, and a browning on the tips of leaves. Black currants formerly carried white pine blister rust. If rabbit damage is found you can protect the plant with a fence formed with hardware cloth (looks like chicken wire but with small square holes). These specks are the bodies of the fungus, which contain the spores. Very low maintenance with no ornamental appeal than its dense green foliage. Therefore, planting currants and gooseberries in areas where white pines are present can lead to serious losses of white pines. Rusts are cool weather diseases that require free water for germination and infection of leaf tissue. Overgrown shrubs can be reinvigorated in a manner similar to lilacs, tatarian honeysuckle, or cranberries. Alpine Currant Ribes alpinum. Family (English): Gooseberry. Prune bushes in the spring when frost danger passes. I was warned that they were prone to aphids. No serious insect or disease problems. The rust affects leaves, stems, and fruit but is commonly found on the leaves and leaf petioles. With alpine currant branches free from leaves, your hedge's form is easily seen and shaped. Alpine Currant. It causes tan spots with dark purple outlines to appear on foliage. The more common diseases found on currants and gooseberries are anthracnose, leaf spot, and powdery mildew. Entire leaves may curl and wither when leaf scorch is severe. We are concerned only with the American type. View our privacy policy. Ribes alpinum, commonly called alpine currant, is a compact, mound-forming shrub which grows 3-6' tall. As the infection worsens, leaves can turn yellow. These shrubs need little winter care but should be occasionally checked for rabbit or other damage. European black currants are especially susceptible to the disease, while many red and white cultivars are resistant. Currant bushes affected with anthracnose become less productive and less vigorous. An excellent low to medium-sized hedge or screening plant, densely branched with leaves to the ground, takes pruning extremely well, tough and adaptable; small yellow flowers in spring, good fall color; can be susceptible to mildew Full sun to shade; moist, well-drained soil is best, but tolerates some dryness; tolerates alkaline soils. The fungi are host specific, with hollyhock, alpine currant, geranium, pine, rose, fuchsia and snapdragon the most commonly attacked plants. Ribes / ˈ r aɪ b iː z / is a genus of about 200 known species of flowering plants native throughout the temperate regions of the Northern Hemisphere. The lighter-green areas gradually turn white. The best thing is, they're fully winter hardy, so you only need to buy a currant bush once for a tasty harvest every summer! 0 more photos VIEW GALLERY. Alpine Currant, Mountain Currant. The spots typically appear on the foliage in June, at which time they resemble anthracnose. BRV is the agent of black currant reversion disease (BRD), ... Interestingly, BRV has also been detected in red currant (R. rubrum), and in wild red currant and alpine currant (Latvala et al., 1997), indicating that these Ribes species may act as hosts for BRV. Leaf spot causes red or white currant bush foliage to become dotted with black or brown spots. In wet, humid conditions, anthracnose and leaf spot can be troublesome. Currant bushes affected with anthracnose become less productive and less vigorous. Then prune off branches that compress other limbs. By entering your email, you consent to receive communications from Penn State Extension. It causes tan spots with dark purple outlines to appear on foliage. Deer resistant. Bright green leaves are 3-5 lobed, turning to a dull yellow in fall. Alpine Currant will grow to be about 5 feet tall at maturity, with a spread of 6 feet. This viral disease appears as a chlorotic pattern (light and dark areas) on the leaves. Wax currant has also been shown to produce allelopathic effects (Heisey 1982). It has glossy green leaves Tolerates wind and is fairly drought tolerant. Anthracnose is a fungal disease of red and white currant bushes similar to leaf spot. Bloom: In conspicuous greenish yellow flowers. Two generations hatch each year, causing damage in the spring and again in late summer. Flowers are greenish-yellow and inconspicuous. In the fall, it drops its leaves without much fanfare, and in the spring it greens up again in the blink of an eye. Entering your postal code will help us provide news or event updates for your area. First cut away all dead, diseased and intersectiong branches. Gardeners can treat currant bushes for powdery mildew with fungicide or horticultural oil; they should check with local county extension officials for a list of approved fungicides for their area before treating. Previous Next. Foliage: Deciduous. 2 pictures total. Insects & Disease. Title: Diseases of Landscape Plants: Powdery Mildew Author: Janna Beckerman (Purdue Botany and Plant Pathology) Subject: Diseases of Landscape Plants That warning was correct. Family: Grossulariaceae: Genus: Ribes (RYE-bees) Species: alpinum (AL-pin-um) Category: Shrubs . Currants are small fruit from the ribe family and are native to northern Europe and Asia. Alpine Currant will grow to be about 5 feet tall at maturity, with a spread of 6 feet. Two types of powdery mildew, American and European, attack Ribes plants. This is a mild disease that mainly affects the bush's appearance, but it will spread to currant fruit if not treated. - Disease Alpine Currant is recommended for the following landscape applications; - Mass Planting - Hedges/Screening - General Garden Use. Alpine Currant is a small to medium sized hardy shrub used alot for dense hedging that can be kept trimmed to any desired height from 18 inches to 4 feet. Culture. This disease is caused by the exotic (not native) fungus Cronartium ribicola, which was introduced into North America in the early 1900’s. Make jam, pies and pudding with your own delicious home-grown currants! Black currant reversion disease and the vector of its causal agent, the black currant gall mite Cecidophyopsis ribis, have been recognised for at least 100 years and are the two most damaging organisms of black currant crops world-wide.However, the molecular characterisation of these two organisms has begun to be determined in only the last few years. see more; Family Grossulariaceae . Light: Prefers full sun but tolerates shade. Flowers are greenish-yellow and inconspicuous. Currant blister aphid is common on red, white and black-currants. Alpine Currant. Why do we need this? Disease; Alpine Currant is recommended for the following landscape applications: Mass Planting; Hedges/Screening; General Garden Use; Planting & Growing. Infection occurs during wet, humid weather in plantings in low areas with poor air circulation. Keeping currant bushes pruned regularly helps ward off the fungal diseases anthracnose, leaf spot and powdery mildew. Lime sulfur or copper-based fungicides can be used to prevent anthracnose infections if applied from the beginning of spring through summer, which is the prime period of infection. Powdery mildew is a fungal disease that results in a powdery gray or white coating on the leaves and stems of infected plants. View gallery. Growing and importing currants was once banned in Idaho and many other states because these crops are the alternate hosts of the blister rust disease that once devastated white and other five-needled pines in North America. JavaScript seems to be disabled in your browser. Ribes alpinum, commonly called alpine currant, is a compact, mound-forming shrub which grows 3-6' tall. See All Pest, Disease and Weed Identification, See All Beer, Hard Cider, and Distilled Spirits, See All Community Planning and Engagement, Pollinators and Pesticide Sprays during Bloom in Fruit Plantings, Strawberry Disease - Angular Leaf Spot Favors Cold, Wet Conditions. Family (Botanic): Grossulariaceae. It forms a thick shrub with branches all the way to ground level. Mature alpine currants do not require fertilization, but young plants can benefit greatly from regular fertilizing. Genus Ribes can be deciduous or evergreen shrubs, sometimes spiny, with simple, usually palmately lobed leaves and small tubular or bell-shaped, solitary or racemose flowers borne in spring or summer, followed by juicy, sometimes edible berries . The infection may appear at any time during the growing season. Green Mound Alpine Currant will grow to be about 3 feet tall at maturity, with a spread of 24 inches. Growth Rate: Medium. Copyright Leaf Group Ltd. // Leaf Group Lifestyle. Alpine Currant will grow to be about 5 feet tall at maturity, with a spread of 6 feet. Don't be concerned with upcoming flowers or fruit. As the infection progresses, the entire surface of these parts becomes covered with a whitish growth. Type: Deciduous shrub. Disease; Alpine Currant is recommended for the following landscape applications; Mass Planting; Hedges/Screening; General Garden Use; Planting & Growing. Foliage is consumed by several small, spotted, caterpillar-like larvae. Alpine currant is one tough cookie. This disease quite commonly is called septoria leaf spot, the name of the parasitic stage of the fungus causing the infection. As the infection worsens, leaves fall off the currant bush. Shiny, dark green leaves in summer; female plants produce bright red fruit in mid-summer (many commercially available cultivars are male and do not produce fruit). These growths contain another type of spore, which germinate and infect the white pine in the fall. Alpine Currant is also found in low-maintenance group plantings where coverage without ornamental appeal, basically no flowers, fruits, autumn color, or winter interest, is desired or accepted. White pine blister rust relies on two plants (a white pine and a host tree, such as black currant) to develop, and can kill the host plants. He specializes in developing informational articles on topics including food, nutrition, fitness, health and pets. Details R. alpinum is a compact, mound-forming, twiggy, deciduous shrub with small, lobed leaves on spineless shoots. Disease; Alpine Currant is recommended for the following landscape applications; Mass Planting; Hedges/Screening; General Garden Use; Planting & Growing. Green Mound Alpine Currant will grow to be about 3 feet tall at maturity, with a spread of 24 inches. White pine blister rust is not a serious disease of currants and gooseberries; however, it is a very serious disease of white pines (Pinus strobus). 2 pictures total. This is a fungal organism that causes a sudden wilting and dying of scattered canes or whole bushes. Black dots called perithecia, which contain spores of the fungus, appear in the fungal mats covering the affected areas. This is a mild disease that mainly affects the bush's appearance, but it will spread to currant fruit if not treated. Clean up the canopy to promote air circulation by removing weak branches too thin to bear fruit, old branches with woody stems, and vertically growing branches. It is a deciduous shrub, meaning that it loses its leaves at the end of its growing season. It forms a thick shrub with branches all the way to ground level. Powdery mildew is a fungal disease that results in a powdery gray or white coating on the leaves and stems of infected plants. This fungal disease affects two hosts -- currant plants and white pine trees. Alpine currant, also known as mountain currant, is a small deciduous shrub. By late summer, a yellow to brown, threadlike growth develops on or near these infection spots. Drought Drowning and Edema Fungal Disease. Features. Primarily used for jams and jellies, currants can be made into wine or combined with other fruit and baked into pies or tarts, adding a little zip to low acid fruits. This fungal infection produces a dark-colored dieback of the tips of the branches and a gray mold rot of the berries. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 30 years. Make sure you start them off right with alpine potting mixes, and then just sit back and let them establish themselves in your rockery, border edges or containers. Currants and gooseberries serve as an alternate host for the rust fungus that causes white pine blister rust. This weakens the plant, reduces vigor and productivity, and results in smaller fruit of lower quality. It takes snow being piled up on it all winter, and salt as well. The imported currant worm, Nematis ribesii (Scopoli), is the most serious insect pest of currants and gooseberries, with the latter being the favored host. Extremely winter hardy, Ribes alpinum (Alpine Currant) is a compact, mound-forming, deciduous shrub with bright green, trilobed leaves in spring. Disease; Alpine Currant is recommended for the following landscape applications; Mass Planting; Hedges/Screening; General Garden Use; Planting & Growing. Heavy mildew deposits will cause stunting and premature drying of the foliage, affecting fruit production and weakening the plants. Most of the cultivars of alpine currant that are sold, however, are male because of their apparent resistance to rust, so berries are not an important consideration when using the plant. Alpine Currant will grow to be about 5 feet tall at maturity, with a spread of 6 feet. Size: Small Medium Large Exposure/ Light Requirements: Full Shade Full Sun Partial Sun/Shade Pests and Problems: Environmental Damage. Black currants formerly carried white pine blister rust. Alpine currant is one tough cookie. These shrubs need little winter care but should be occasionally checked for rabbit or other damage. This rust disease can produce striking symptoms on species of wild gooseberries or in neglected home garden plantings but causes slight damage. The most common virus disease is currant mosaic. Treat for leaf spot with an approved fungicide. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 30 years. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 30 years. Table 2.4 lists pesticides available on various fruit crops for the control of diseases. If damage is present, construct a small fence around the alpine currant using hardware cloth to protect the plant. A successful website writer since 1998, Elton Dunn has demonstrated experience with technology, information retrieval, usability and user experience, social media, cloud computing, and small business needs. The flowers are greenish-yellow but ornamentally insignificant. - Disease Alpine Currant is recommended for the following landscape applications; - Mass Planting - Hedges/Screening - General Garden Use. Alpine current is a tough hedge plant. They do not appear on anthracnose leaf spots. Clove currant, buffalo currant, Missouri currant, golden currant. Deer resistant. The most common virus disease is currant mosaic. Dunn holds a degree from UCSF and formerly worked as professional chef. Alpine currants prefer dry conditions. Currant bushes experience few plant diseases; all can be easily identified and treated with fungicide. Tiny, black specks soon appear scattered over the surface of each spot. Left unpruned it doesn't get too large. Clean up the canopy to promote air circulation by removing weak branches too thin to bear fruit, old branches with woody stems, and vertically growing branches. see more; Family Grossulariaceae . It is most evident just before fruit ripens. Alpine Currant will grow to be about 5 feet tall at maturity, with a spread of 6 feet. White, powdery patches of the fungus appear first on the lower parts of the bush, attacking the leaves, shoots, and berries. 1  A powdery mildew infection generally starts out as a few spores on the leaves but quickly spreads, forming a thick coating of fungi. From 1920 to 1966, black currants were banned in North America to protect the white pine population. Currants burst into growth quite early in the season however, so it’s important not to delay planting for too long. Prior to planting, check with your local extension office to see if this species is legal in your area. Leaf spot causes red or white currant bush foliage to become dotted with black or brown spots. Currants can cope with partial shade but will crop more heavily and yield sweeter-tasting fruits in sunny spots, so bear this in mind when choosing a space to grow them. Alpine Currant foliage Photo courtesy of NetPS Plant Finder Planting & Growing Alpine Currant will grow to be about 5 feet tall at maturity, with a spread of 6 feet. Eggs hatch in early spring, and the insects feed by sucking out the plant juices, which results in stunted and distorted new growth. Grows well in sun or shade and is rarely bothered by insects or plant diseases. I bought four red currants at a going-out-of-business-sale a few years ago and knew almost nothing about the plants at that time, since they generally fall out of the realm of ornamental plants. Disease; Alpine Currant is recommended for the following landscape applications; Mass Planting; Hedges/Screening; General Garden Use; Planting & Growing. 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