Boxwood blight and other disease
We are planning to plant some boxwood and have heard there are issues with blight and other disease. We were told that Green Velvet is resistant to the blight and other disease. Is this accurate? Is there another type of boxwood that is more resistant to blight and disease that we should consider?
Montgomery County Maryland
All types of boxwoods are susceptible to boxwood blight and 'Green Velvet' is noted as being "moderately susceptible." Some of the most resistant types are Buxus microphylla ‘Golden Dream’, B. harlandii, B. sinica var. insularis ‘Nana’, and B. microphylla var. japonica ‘Green Beauty’.
'New Gen' is a cultivar that has high resistance and is expected to come on the market in 2020.
Keep in mind that "resistant" does not mean "immune." You may still see symptoms of boxwood blight on a resistant plant but the plants will tolerate the disease.
Refer to this publication from Virginia Cooperative Extension for a list of boxwoods and their susceptibility to boxwood blight. https://www.pubs.ext.vt.edu/content/dam/pubs_ext_vt_edu/PPWS/PPWS-29/PPWS-29-pdf.pdf