Leaf scorch on flowering dogwoods is a common issue that many gardeners and homeowners face. It can be quite disheartening to see the edges of the leaves turning brown, but with some understanding of the underlying causes and appropriate actions, you can help your dogwood regain its health and vibrancy.
One of the primary reasons why dogwood leaves turn brown is due to the tree’s sensitivity to intense sunlight and heat. Flowering dogwoods are naturally understory trees, meaning they thrive in the dappled shade of larger trees. When exposed to prolonged periods of full sun, especially during the hot summer months, the leaves can become scorched.
Another factor that contributes to leaf scorch is drought. Dogwoods have shallow root systems, making them more susceptible to dry conditions. When there is insufficient moisture in the soil, the leaves may lose water faster than they can absorb it, leading to dehydration and browning.
To address leaf scorch, it is crucial to provide additional moisture to the tree, especially during periods of drought or hot weather. Regular watering, particularly during the early morning or late evening when evaporation is minimal, can help replenish the soil’s moisture and reduce the stress on the tree. Deep watering, ensuring the moisture reaches the root zone, is more effective than shallow watering.
Mulching around the base of the tree can also help conserve moisture and regulate soil temperature. Apply a layer of organic mulch, such as wood chips or shredded bark, about 2-3 inches deep, ensuring it does not come in direct contact with the tree trunk. This will help retain moisture, suppress weed growth, and insulate the soil, creating a more favorable environment for the dogwood.
Another strategy to combat leaf scorch is to provide shade for the tree during the hottest part of the day, typically from noon to 5 p.m. This can be achieved by planting taller trees or installing shade cloth or a shade sail. By reducing the intensity of direct sunlight, you can protect the dogwood’s leaves from scorching and minimize water loss through transpiration.
In my personal experience, I have found that a combination of these approaches can greatly improve the health and appearance of dogwoods affected by leaf scorch. I have seen significant improvements in dogwoods under my care by ensuring they receive adequate moisture, mulching the soil, and providing some shade during the hottest hours of the day.
The leaves of your dogwood may be turning brown due to leaf scorch, which can be caused by prolonged exposure to intense sunlight and heat, as well as drought conditions. To address this issue, make sure to provide additional moisture through regular watering, mulch around the base of the tree to retain moisture and regulate soil temperature, and provide shade during the hottest part of the day. By implementing these measures, you can help your dogwood recover and thrive once again.
