How do you treat hawthorn fungus?
Protect trees from infection by spraying in spring and early summer with an approved fungicide. Both chlorothalonil and mancozeb are registered for use against cedar rust disease on hawthorns. Follow the label instructions and spray the tree until the fungicide drips from the branches.
What diseases do hawthorn trees get?
Hawthorn Diseases
| Disease | Pathogen/Cause |
|---|---|
| Cedar-hawthorn rust | Gymnosporangium globosum |
| Cedar-quince rust | Gymnosporangium clavipes |
| Leaf blight and fruit rot | Monilinia johnsonii |
| Leaf spot | Diplocarpon mespili (Entomosporium, asexual stage) |
Why are my hawthorn leaves turning brown?
An India hawthorn that is turning brown and dropping its lush leaves is suffering from a pest infestation, disease or cultural problem that must be remedied if the shrub is to return to good health.
Why are the leaves falling off my hawthorn?
Answer: The most common cause of premature leaf fall in Hawthorn is a fungal disease called leaf spot. The cause is Diplocarpon mespili, a fungus commonly found in Oregon and which has a very wide host range.
Can hawthorns get fire blight?
This disease affects over 130 plant species in the Rosaceae family worldwide. In Minnesota, fire blight is most often seen on apple and crabapple (Malus spp.) and mountain ash (Sorbus spp.). The disease also can occur on raspberry (Rubus spp.), serviceberry (Amelanchier spp.), hawthorn (Crataegus spp.)
What is the life expectancy of a hawthorn tree?
Over the Washington hawthorn’s life, it reaches a height of 20-35 feet with a lifespan of approximately 50-150 years. When the tree is healthy and properly cared for, you can expect around 2 feet of growth each season.
What is eating my hawthorn leaves?
Hawthorn leaf miners are small flat caterpillar-like larvae that feed inside leaves, producing irregular brown splotches. Heavily mined leaves may drop prematurely but general tree health is usually not affected.
How do you keep hawthorn from rusting?
Avoid planting Juniper and Hawthorn together in the Landscape. The only chemical control would include preventative spraying with copper based fungicide in early Spring and continuing once a week until early Summer. This type of spray is only beneficial in a preventative situation.