![]() Allow the soil to drain between waterings to allow oxygen back into the soil. Water only once or twice a week, soaking the soil well. If it does not rain, apply 1 inch of water per week in clay soils, or 2 inches in sandy soils. Water when the soil is dry, but don't overwater. In such cases, some trees may recover with the loss of only a few branches, while trees more severely damaged may die.įollow these practices to limit stress and improve your tree's ability to fight disease: In particular, Diplodia blight often develops following hailstorms because the latent infections take advantage of hail-damaged branches. Pines that appear healthy may have latent (dormant) infections that may be triggered under certain conditions, resulting in rapid symptom development. Overwatering trees also damages roots.įactors favoring Diplodia blight are: drought Drought can trigger the development of severe symptoms, which may continue for many years after the drought ends.Īctivities that contribute to root damage include trenching, compacting the soil and planting trees too deep. Whatever you do, don’t transplant a wild dogwood into the landscape – as this is how many infections started.Stressful conditions such as drought and root damage play a big role in the development of Diplodia blight. There are also new cultivars of the Appalachian dogwood series that are bred to be anthracnose resistant. White dogwoods seem to be less susceptible to the infection than their pink counterparts. ![]() If you’ve lost a tree to dogwood blight, consider replacing it with Oriental dogwood ( Cornus kousa). Removing spent leaves, pruning low branches, opening up a dense canopy, and trimming water sprouts in the fall will create intolerable conditions for the fungus. Keeping your dogwood properly watered and fertilized is the first line of defense, 2 to 4 inches (5-10 cm.) of mulch spread over the root zone will help maintain soil moisture. Prevention of dogwood blight is the best tool you’ve got to keep your landscaping trees healthy. Small trees may be saved with a fungicide spray applied every 10 to 14 days as long as cool, moist weather persists. ![]() That means all leaves, all twigs, and all branches showing signs of infection must be removed and destroyed promptly. Controlling Dogwood Blightĭogwood blight control is difficult, but if you catch it early, you may be able to save the tree by cutting out all diseased tissues. In very advanced diseases, lower branches may die, cankers may form on the limbs, and trunk sprouts will increase in number. Leaves attached to these infected areas will shrivel and turn black. Once the disease spreads to leaf petioles and twigs, however, it becomes more obvious. The early symptoms are similar to leaf spot diseases, with purple-bordered soft wet spots appearing on leaves, especially around the margins. ![]() It is believed to have started in the northeastern United States about 25 years ago but has been spreading southward ever since. Dogwood Anthracnose Informationĭogwood blight, also known as dogwood anthracnose for the fungal pathogen that causes the disease, is a fairly new problem. Read on to find out about dogwood tree blight and what you can do to help your plant through this rough time. Dogwood tree blight, for example, is a fungal infection of dogwood trees that can turn these valuable visual assets into serious detriments. It’s never good news when a tree gets sick, especially when it’s your stately dogwood tree. ![]() Although they’re great for adding lots of curb appeal, they’ve got a few serious problems that can spoil the idyllic feel of your yard. Dogwood trees are beautiful, iconic landscaping trees that come from the forest understory. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |