Photo: Steve Bender/em. Click on this article to find out why your dogwood has yellow leaves and what can be done about it. The next, the leaves turn whitish tan, especially around the edges, and start dropping. It seemed to be doing well, but now the leaves are turning brown around the edges although they aren't falling off. Affected leaves turn yellow or brown along the edges and curl due to water stress, sunburn, inadequate … The first sign of infection can often be seen on the leaves, where you might see tan spots that develop purple rims. Other signs that your plant is not getting enough water are leaves that are curling inward, drooping down, … Maintaining healthy dogwood trees by following the recommended cultural practices is the first line of defense in reducing any of these problems. Fungus on the leaves may cause the discoloration, or it may be indicative of overly moist conditions in the foliage. Leaves eventually die as more of the tree becomes affected if the cause isn't treated. Leaves may also have necrotic veins and leaf margins, and large necrotic blotches. Right before the leaves fall off the plant, they will turn yellow. The larvae of a clear-wing moth, this caterpillar tunnels into the trunk of the tree and eventually girdles the tree. The tree … I planted a small dogwood tree about two months ago. It has flowered also. I purchased the tree last Sept. and till now, mid June, approximately half the tree has leaves. The tree has been fertilized and receives adequate watering. Ten to twenty percent or more leaf drop is possible, but unless a tree is heavily defoliated for several years in a row, this normal adjustment to heat and dry weather doesn’t affect the health of the tree. emLeaf scorch of flowering dogwood. Discolored Leaves. Dogwood Leaves Turning Brown - Knowledgebase Question. Jun 23, 2015 - If you see your dogwood tree leaves turning yellow during the growing season, the tree is likely suffering from a pest, disease or deficiency. ... June 17, 1998. Will I lose the tree or could it just be in some kind of shock or does it need more water? Boom-you get October in July, break out the rakes. .the lower half, with very little leaf growth above that point. Selecting a tree appropriate for your site, planting it correctly, and providing regular care are essential steps to prevent common pest problems of dogwoods (Cornus spp.). Leaves dropped for this reason will be yellow to tan with few if any leaf spots on them. This usually happens in mid- … A variety of environmental stressors can cause an alarming curl -- known as leaf scorch -- in dogwood leaves . . Dogwood Anthracnose is caused by the fungus officially known as Discula Destructiva, and it might be helpful if I describe some of the symptoms. Dogwood borer The most devastating borer of dogwoods is the dogwood borer, Synanthedon scitula. Q. Kousa Dogwood Tree Growth. Description: One day, your dogwood looks as happy as a Wall Street banker trading on inside information. Leaves may begin dropping or wilting. Weakened trees are more susceptible. An early symptom may be the sloughing of loose bark. ; Dogwoods planted too deeply, inadequately watered during the first two years of establishment and drought periods, or physically wounded at the trunk (e.g., mower damage), are more susceptible to pest infestations. Why do dogwood tree leaves curl? Key Points. If your plant is dry – you can stick your finger into the soil to check it – try to get it on a regular watering schedule. Red, yellow or brown spots on the leaves is a symptom of tree stress. And it's my tree! 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