When it comes to controlling cherry leaf spot, one of the best fungicides to use is chlorothalonil, commonly sold under the brand name Bravo or as generic products. Chlorothalonil is what we call a multi-site protectant fungicide, which means it works by targeting multiple sites in the fungus, making it highly effective for controlling leaf spot.
What makes chlorothalonil particularly great for cherry leaf spot control is that it is not at risk for fungicide resistance development. This is really important because resistance can occur when a fungus becomes immune to the effects of a particular fungicide, rendering it useless in the long run. By using a multi-site protectant like chlorothalonil, you minimize the chances of resistance developing and ensure continued effectiveness in controlling leaf spot.
I have personally used chlorothalonil for cherry leaf spot control in my own garden with excellent results. The fungicide is easy to apply, usually in the form of a spray, and provides long-lasting protection for the cherry trees. It forms a protective barrier on the leaves, preventing the fungus from infecting them and causing leaf spot.
When using chlorothalonil or any fungicide, it’s important to follow the instructions on the label carefully. This includes wearing appropriate protective gear, such as gloves and a mask, and applying the fungicide at the recommended dosage and frequency. It’s also important to time the application correctly, usually before or during the shuck split stage, when the cherry trees are most susceptible to leaf spot infection.
In addition to using chlorothalonil, it’s good practice to incorporate other cultural and preventive measures to further control cherry leaf spot. This can include pruning to improve air circulation and reduce humidity around the trees, removing fallen leaves and debris from the ground, and maintaining good overall tree health through proper watering and fertilization.
To summarize, chlorothalonil is the recommended fungicide for cherry leaf spot control. Its multi-site protectant action and low risk of resistance development make it highly effective in controlling the fungus. Following the label instructions and combining fungicide applications with cultural practices can help ensure the best results in managing cherry leaf spot.
