Knowing Atlanta’s weather history explains why the symptoms are so severe. All trees are different, in most cases, it … I have taken some photos close-up and further back in the hopes you can identify the problem. Some of the most common pest causes of a dogwood tree dropping leaves are: Insect pests are usually the easiest to diagnose. The tree is deciduous. If trees are dropping their leaves in the heart of summer, it's a sign that something's wrong. Dogwood leaves are equally attractive, appearing as a brilliant green in spring and summer and changing to vibrant reds, yellows and oranges during the fall. Leaves dropping after transplant? Rake infected plant matter from underneath the dogwood and place inside a garbage bag as well. The whiteflies are tiny, sap-sucking pests that fly off the plant when the dogwood is disturbed. It is essential to determine the cause and preserve the energy gathering foliage. Cornelian Cherry (Cornus mas) The cornelian cherry (also known as European cornel) is a large … My Young Pink Dogwood - I planted my 5 foot young tree last year and it lost its leaves. For a number of reasons, it’s not good that your street tree is dropping leaves. Protect trees from drought stress, winter injury, and dogwood borer attack. The green leaves add charm and movement during the growing season and set a perfect backdrop for the bright flowerlike bracts. Leaf spot disease also occurs on twigs and buds. Due to its year-round appeal and small size, dogwood tree is one of the most sought after ornamental plants in Northern America. Let’s examine proper cultivation and conditions for the trees and see what can be done about treating a diseased dogwood. This is a … Kousa dogwood Kousa dogwood is an excellent small specimen tree. Borers and scale respond to appropriate insecticides while sawfly larvae are large and obvious enough to hand pick and destroy. It has not experienced this same problem. These are generally the first signs of a club gall midge (Mycodiplosis calvula) infestation, which is a brown fly that lays its eggs in terminal leaves. A reader asked why her oak tree was losing all its leaves summer. Apply horticultural oil to dogwoods infected with scales until the plant is completely covered. Treat the tree … With off-white, well-formed blooms that cluster in spring, followed by rich green foliage in summer, the fall surprise of carmine red branches is an extra treat. The disease seldom kills the tree, but it distorts the leaves late in the growing season. The infected leaves will remain on the tree so, despite the necrotic tissue, there is still enough green tissue producing carbohydrate reserves to sustain the tree for the season. There is a dogwood tree in the front yard where I live whose leaves are beginning to turn red, here in early August. How long does it take a tree to recover from transplant shock? There are any number of diseases and pests that can stress your dogwood and cause dogwood leaf drop. By: Bonnie L. Grant, Certified Urban Agriculturist. The foliage of this dogwood arrives in a medium shade of bright green and deepens to a dark green as it matures. Some usher out the summer with fiery fall displays as the leaves turns yellow, scarlet, orange, and purple. Two outstanding characteristics are the four-petaled, white flowers that appear above the foliage in June and reddish-purple fall color. We outline why oak, maple and ash trees lose leaves in summer. By fall, the leaves develop to rich shades of purple and red before dropping from the tree. In spring, these native trees (Cornus florida), which grow only to 20 to 30 feet, explode with white (or sometimes pink or red) bracts centered with small clusters of yellow flowers, shouting that winter is finally over.In summer, their blossoms give way to light green leaves that provide welcome shade. 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