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  1. 19 lip 2024 · I know from experience that dealing with boxwood blight requires a two-pronged strategy: prevention and treatment. To preempt infection, I focus on environmental management, such as avoiding overcrowding and ensuring good air circulation.

  2. Fungicides should be applied every 7 to 14 days through the growing season to protect susceptible boxwoods. Treatment may be necessary for the next 3 to 5 years. For fungicides that provide preventative management or are labeled for your state, contact your local arborist.

  3. Boxwood blight disease is caused by the fungal plant pathogen Calonectria pseudonaviculata. This disease has been confirmed to be in Ohio's landscape. This fungus infects several members of the Buxaceae family including boxwood (Buxus spp.), Japanese spurge (Pachysandra terminalis), Allegheny spurge (P. procumbens), and sweetbox (Sarcococca spp.).

  4. Boxwood blight (also known as box blight or boxwood leaf drop) is a widespread fungal disease affecting boxwoods (box plants), caused by Cylindrocladium buxicola (also called Calonectria pseudonaviculata). The disease causes widespread defoliation and eventual death.

  5. Boxwood blight is caused by a fungus, Calonectria pseudonaviculata, that can infect members of the boxwood family (Buxaceae) including Buxus spp. and their cultivars, and Pachysandra and Sarcococca. The disease has devastated boxwood for many years in Europe and New Zealand, but it is new to North America, including Oregon.

  6. 22 wrz 2020 · Symptoms of boxwood blight on boxwood (Buxus spp.) include leaf spots or blotches, rapid defoliation, and stem lesions (Figs. 1, 2, 3, and 4). Leaf symptoms are most abundant during the growing season, whereas stem lesions are visible year-round (Henricot et al. 2000).

  7. Find out how to identify, and treat, box blight in your garden. Box blight (Cylindrocladium buxicola) is a fungal disease that affects box (Buxus) plants. It first appeared in Britain in 1998 and is worst in warm, humid conditions. Box blight causes leaf browning and stem dieback.

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