Landscape Update II
FUNGAL DISEASES of shade trees and evergreens are made worse by cool, damp weather in May or June. A cool, wet spring can result in anthracnose in maples, sycamores, ash trees and oaks, as well as others. Poor ventilation and slow drying of foliage between rains can also promote fungal diseases. Preventive fungicide sprays or fungicide trunk injections may help with these problems.
SYCAMORES, OAKS, and ASH TREES. The sycamores, oaks, and ash trees can develop ANTHRACNOSE, in some cases severe enough to warrant fungicide sprays or trunk injections.
FLOWERING TREES often develop SCAB and LEAF SPOT fungi which result in leaf browning and loss in mid-spring to summer. A series of antifungal sprays or fungicide trunk injections may help to prevent those problems and keep your trees beautiful.
PINES AND SPRUCE TREES in this area suffer from DIPLODIA TIP BLIGHT, DOTHISTROMA needle cast and RHIZOSPHAERA needlecast fungi. Management of these diseases requires two to three sprays per year over a several year period. Although the effects are seen mainly in the late summer and fall, sprays in the spring are necessary to control these diseases. Large blue spruces often have CYTOSPORA fungus causing branch tip dieback and whole branch dieback in a sporadic pattern. CYTOSPORA is not treatable with any fungicide, but can be slowed with sanitation pruning and cultural measures.
TREATMENT. Discussed on the Fungal Disease Recovery page.
TriCity Tree Doctor Call us at 989-454-0227
United Tree Service Call us at 810-266-4363