WebMar 24, 2024 · Algal leaf spot is a disease that affects trees and shrubs with thin, leathery leaves. It is a disease that quite severely spoils the appearance of the bright green leaves of magnolia trees. Like most such diseases, the Algal leaf spot is most active in warm and humid weather. Pathogens settle on the leaves and begin to destroy them. WebJul 11, 2024 · Sooty bark disease is new to Seattle and killing street trees. The spores also are a possible human lung irritant. Tree pathologists say the disease is stoked by heat and drought and are concerned ...
Diseases - Chestnuts
WebApr 4, 2024 · How to fix leaf scorch on magnolias. Ensure your plant gets plenty of water during the hottest months. If your plant is exposed to the sun for most of the day, consider supplying some afternoon shade. This is especially important for young trees. You can either erect some shade cloth over the young tree or plant taller trees or shrubs nearby ... WebJul 27, 2024 · Dothistroma Needle Blight. Needle blight is a fungal disease in pines that causes premature defoliation in mature trees and stunts the growth of young trees. In North America, the disease affects as many as 35 pine species. Symptoms of the condition include yellow or tan bands on needles, followed by needle dieback. chionanthus foveolatus
13 Common Maple Tree Problems and Diseases - Dengarden
WebJun 2, 2024 · Common Apple Tree Diseases . There are 6 "major players" when it comes apple diseases, says Slack. Known to greatly reduce or even eliminate a harvest and weaken the tree, these diseases make apple growing a challenge. When disease does take hold, identify it early to slow the spread. And remember, plant resistant cultivars to reduce … WebSep 8, 2024 · Apple Scab. Apple scab is one of the most common diseases that afflict apple trees and can also be on of the most serious. It usually appears in early to mid-spring and is more prevalent during rainy weather. The disease is caused by the fungus Venturia inqequalis. The fungus overwinters in infected leaf litter on the ground. WebApr 18, 2024 · Instead, support your tree with proper watering and feeding. If you must treat it, use a fungicide and be careful to get all the algal spots at once. Fungal leaf spots. … chionanthus for sale