![]() Spores can survive for three weeks without a host plant. The symptoms appear after approximately 7 days. The life cycle of boxwood blight can be completed in just one week. When temperatures rise above 84☏, the disease is suppressed.Ĭonidia, or fungal spores, are spread by splashing water on our tools and clothing and on the fur of animals. Life Cycleīoxwood blight is a fungal disease that thrives in wet and humid environments with temperatures ranging from 60 to 80☏. Knowing the signs and symptoms of this disease will help you be better prepared if it occurs in your area. There is no need to be concerned if boxwood blight has not yet been detected in your state. When we bring diseased boxwoods into our gardens, it spreads. It has become a major issue for buxus growers, and it is now invading our landscapes. It could be mistaken for winter damage, dog urine damage, drought damage, or other boxwood foliage diseases. It has no effect on those plants, but it can spread to boxwood.īoxwood leaf drop is another name for boxwood blight. The pathogen attacks boxwood (Buxus) species but can also be found on pachysandra and sweet box (Sarcococca). It was discovered in New Zealand in 2002 and on the east coast of the United States in 2011, and it is now found in approximately 20 states. And it’s lethal.īoxwood blight (Calonectria pseudonaviculata) was first identified in the UK in the 1990s. Unfortunately, it is susceptible to the disease boxwood blight. Its small, rounded leaves remain evergreen throughout the year. Because it grows slowly, it can be used in containers or as a topiary. ![]() It is adaptable to a wide range of growing conditions and is simple to maintain. It has an elegant appearance and works well as a foundation planting as well as a hedge. It’s been called America’s favorite shrub, and for good reason. ![]()
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