(Note that weather conditions in Virginia are favorable much of the year.) Apply preventative fungicides, as recommended on the product label, to the infected and non-infected boxwood in the vicinity whenever weather conditions are favorable for disease development.If leaf debris has been incorporated into the soil, removing soil to a depth of 8" to 12" may help eliminate inoculum of the pathogen, but this is often impractical.(In research studies, a 2”- to 4”-inch mulch layer effectively prevented splash dispersal of boxwood blight spores to lower leaves, but a shallow mulch layer is a better cultural choice for boxwood.) Mulch soil surface under existing boxwood and/or replacement boxwood to a depth of approximately 2”.It is recommended that vehicles that have been potentially exposed to the boxwood blight fungus be thoroughly washed of debris (e.g. For a list of sanitizer recommendations, refer to the Boxwood Blight Task Force website at. Because the fungal spores can stick to tools, equipment, etc., sanitize all tools, equipment, tarps, shoes, gloves, etc., used after removing plants to prevent spread of fungal inoculum to healthy boxwood.Do not compost boxwood debris or plant material and do not place curbside for brush pickup, since this will spread the disease to new locations via wind-blown leaves and/or municipal mulch.Diseased boxwood, leaf debris and soil should be double-bagged and removed to the sanitary landfill OR buried 2' deep in soil OR burned (if allowed in your locality).raking/sweeping, vacuuming, or by using a burn torch/agricultural flamer. Remove leaf litter from soil surface (e.g.Remove diseased, susceptible boxwood promptly OR, if American boxwood, consider alternative approach for American* (below).Option 2-Remediation after confirmatory diagnosis of boxwood blight Disease will spread in landscape and locally (e.g.Infected susceptible boxwood will decline and eventually die.Successful and sustainable landscaping with boxwood currently requires knowledge, attention and care. Although boxwood blight is serious and spreading in many communities in Virginia, boxwood remains a valuable landscape ornamental. Management decisions will influence the disease progression. Using this approach on infected English boxwood.Įxpanding on the Boxwood Blight Management Decision Guideīoxwood blight is a serious and contagious boxwood disease. Additionally, it can be difficult to keep up with the sprays required, particularly under prolonged rainy weather.Įnglish boxwood (Buxus sempervirens 'Suffruticosa') is extremely susceptible to Boxwood Blight therefore, no one is suggesting Also note that weather conditions in Virginia are generally favorable for development of Boxwood Blight and repeatedįungicide sprays may be necessary for much of the year on a 7-day to 2-week schedule, depending on product label directions and Further sporulation of theįungus on the American boxwood is likely and these spores can serve as a source of inoculum for uninfected boxwood in the Pruning out affected branches will not eliminate the Boxwood Blight fungus from American boxwood. It is important to keep in mind that although visibly diseased branches may be pruned out, However, there is not enough research at this time to know how efficacious this approach will be over time in * This alternative approach was proposed in response to reports of growers who rejected the option of removal of very largeĪmerican boxwood.
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