Never compost them unless you are sure your shrubs are disease-free. Photo credit/umd.extension.edu. The slow-growing evergreen shrub makes a lovely and long lasting hedge row that is easily maintained, unfortunately it can be wiped out very quickly by a terrible disease called Boxwood Blight. Although, if the disease is too widespread, it may be best to destroy the infected plant and cultivate a healthy replacement instead. Scrub them thoroughly with soap and water and dry them before putting away after pruning is completed. It’s caused by the fungus Cylindrocladium buxicola but there is another type of box blight caused by the Volutella fungus but this is nothing like as damaging. Treatment There is no know cure for box blight. Box has been hit by various ailments in the past couple of decades, the most serious being box blight, Cylindrocladium buxicola. Boxwood blight will first manifest itself on the leaves of the evergreen shrub (other evergreens are not in danger from the blight, only boxwoods and pachysandras). Other plants that are related to boxwoods may also be hosts, such as pachysandra and sweet box (Sarcococca species). The shrub then drops most or all of its leaves and the twigs begin to die back. The roots aren’t affected, so the shrub may regrow. Black lesions on the green portion of a boxwood stem indicate boxwood blight. * Start by planting boxwoods and pachysandras in a sunny location, never in a shady location. Boxwood blight is caused by the pathogen Calonectria pseudonavicu-latum, and will also affect other shade-loving plants like sweet box and pachysandra. Follow the precautions when working on your boxwoods or pachysandras. 37110. Hi, Your product is superb and working wonders with all my box plants. The organism also goes by the pseudonyms Cylindrocladium pseudonaviculatum or Calonectria pseudonaviculata. Plants For Riparian Areas – Tips For Planning A Riparian Garden, Growing Plants Indoors: Forcing Amaryllis Blooms In Winter, Phalaenopsis Orchid: A Surprising Addition To Holiday Décor, Gifting Holiday Plants: Secret To Keeping Live Poinsettia Plants Healthy, Handmade Ornaments – Holiday Ornaments Crafted From Nature. Box blight disease continues to strike box hedges Chris Crowder, the head gardener, says theirs has been in around 18 months, and seems to go rather worryingly yellow in the sunny areas. Once boxwood blight has been reported near your location, you may want to consider using preventative fungicide treatments for management. Box blight is actually caused by two separate fungi, sometimes acting together. Stay away from box and pachysandra plants when they are wet. Never compost them unless you are sure your plants are disease-free. If you grow box, you’ll be aware that there are a number of pests and pathogens that it may be attacked by, but there’s one problem which is causing more trouble than most; box blight. The other Box Blight, which is more serious, has only been recognised in the British Isles since the mid 1990s, but is causing great concern. McMinnville TN Prevention and treatment is complex and constantly evolving involving the use of organic and chemical fungicides, fertilisers, new planting, maintenance and topiary techniques. The disfiguring organism is also called Cylindrocladium pseudonaviculatum or Calonectria pseudonaviculata. What is Box Blight? As the condition progresses, it … Discovered in the U.K. in the mid-1990s, the disease didn’t make its way to the U.S. until October 2011, where it was detected in a nursery in North Carolina. If you find an infected area hygiene is very important. The fungal spores can remain ‘viable’ in leaves for up to six years even when they have fallen to the ground and dried. How to use fungicides to manage box blight effectively: Apply prior to cutting out infected areas to minimise spread of live box blight spores Apply after cutting at, and adjacent to, sites of infection to clear up latent infections and protect new and uninfected growth For bright green shiny leaves and to prevent fungal disease, such as Cylindrocladium With TOPBUXUS HEALTH-MIX, you can give your box plants bright green shiny leaves, preventing yellow edges and faded colours. Blight symptoms. * Disinfect your pruners between plants by dipping them in a solution of nine parts water and one part bleach for 10 seconds. * Stay away from the shrubs when they are wet. Photo: Dave Clement. Thanks again for this wonderful product. Dip them for 10 seconds, then dry the soles on an old cloth before continuing through the boxwoods or pachysandras. 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