While large tree specimens, such as poplars and oaks provide shade and improve protection from the wind, other types of a landscape with its ornamental qualities. Known for its spring blossoms dogwood thrive in temperate climates with well-drained soils. Some varieties, of course, turns green and yellow leaves, while others are two-colored leaves can form because of his poor health.
Dogwood trees are members of the family Cornaceae. Around 17 varieties of dogwood are native to the United States. Although some varieties of dogwood grow as tall as 60 meters, most small to medium sized trees that have an average height of between 15 and 25 feet high. While most dogwoods grow like trees, have other characteristics that are similar to large shrubs. Dogwood bloom in spring, showing flower-like bracts in shades of pink, cream, yellow and white. As in the flowers, the leaves dogwood vary in color.
Most dogwoods have leaves in uniform shades of green. From light to dark Some species, such as Cornus florida and Cornus controversa produce two-color sheets. Colorful leaves normally green center with a white or yellow rim. This characteristic is typical of the entire system. Yellowness limited to certain areas is usually a sign of disease, especially if the remainder of the leaf dogwood uniformly indicates.
How many ornamental trees dogwoods are susceptible to certain diseases. Fungal infections are common in dogwoods, especially those grown in soils with poor drainage. Fungal conditions, such as root rot can, the leaves turn yellow and fall from the tree. Leaf spot and powdery mildew can green leaves develop yellow spots. Yellowing caused by disease, other conditions, such as poor growth and leaf curl, often present.
With proper care, dogwoods thrive in a variety of landscape settings. Keeping a healthy dogwood help it ward off disease and damage. These trees require more moisture near the level of their roots. Arid conditions may fade and the leaves fall. Annual applications from flowering tree and shrub fertilizer, a sufficient amount of nutrients. For growth and bloom Cut away dead growth and removing it from the soil will reduce the risk of fungal diseases.