We are not able to provide product recommendations without a positive id of the disease that is affecting your Leyland cypress trees. Please contact the Master Gardener with the Cooperative Extension Office for assistance in identifying the fungus/disease.
Yes, Propiconazole 14.3 Fungicide can be applied to ornamental trees such as yoshino cherry trees.
Propiconazole 14.3 is a broad spectrum fungus and disease control product that systemically kills a range of diseases and protects a variety of flowers, cool and warm-season grasses, shrubs, and trees. It may be mixed at anywhere from .5 - 4 oz. per gallon of water to treat 1,000 sq. ft. of turf grass. Please refer to the product label for the full mix ratios and application rates.
Propiconazole 14.3 Fungicide is labeled to target leaf blight, but we would also recommend reaching out to a local nursery, arborist or your local county extension office for more information and tips on treating this disease.
Here is an article by the University of Illinois on Bur Oak Blight with some addtional information.
If brown patch is present then you would want to treat every 14 days. You can apply 2 applications of the Clearys 3336F Fungicide and then 2 applications of the Propiconazole 14.3 Fungicide.
Propiconazole 14.3 will work for oak wilt. Per the product label, using the product by trained arborists (in injection techniques) as a flare root injection for prevention and treatment works best. We recommend that you contact your local cooperative extension office and/or find an arborist who can help you with prevention methods in case you have trees that haven't been infected yet.
Propiconazole 14.3 Fungicide is only labeled for use on non-fruit bearing trees and could not be used on avocados.
Alternative options that can be applied on fruits and vegetables would be Southern AG Triple Action Neem Oil or Bonide All Seasons Horticultural and Dormant Spray Oil RTS.
Please refer to the product labels for application rates and more information. You can also speak to the master gardener at your local county extension office for more treatment options and recommendations.
Propiconazole 14.3Product Label only refers to not using above 90 degrees. However, the manufacture recommends not spraying under 55 degrees for optimal control.
is labeled to treat scab on pecan trees however should not be applied to pecan trees that will bear harvestable fruit in 12 months. Per the product label, for pecans, apply at 12 fl oz in 100 gallons of water and apply as a full coverage spray to the point of drip. Apply every 30 days beginning when conditions are favorable for disease development.
Unfortunately, we do not offer many fungicides for pecans that are consumed. Neem oil is one of the most popular products used on pecan trees for insect and disease control.
While tank mixing and applying Clearys 3336F and Propiconazole together can be done if you feel it’s needed due to the severity of the disease in your lawn, you likely will get better results by just rotating between the two every 14 days based on label instructions and the mix rates for your disease.
