Last week’s “Gardening Corner” featured two serious fungal diseases of American or flowering dogwood (Cornus florida), the often-fatal dogwood anthracnose and the less serious spot anthracnose, which causes unattractive blemishes on leaves, bracts, and fruit, but is less often fatal. In that column, I mentioned kousa dogwood (Cornus kousa), an Asian native, as having some resistance, but not immunity, to the anthracnose diseases. While I was exploring some other alternative ornamental trees, I read about a dogwood species that may be the most resistant of all: Cornelian cherry dogwood (Cornus mas). I can’t say that I have ever seen this tree, but I have seen photos and a video, and it is very attractive, although it doesn’t resemble in every aspect the dogwood that we know and love. Cornelian cherry dogwood is native to Europe from Belgium through the Balkans and as far east as Turkey and Ukraine. It was introduced into Great Britain in the 16th century. Cornelian cherry dogwood will g...