![]() Copper fungicides can be found at most garden stores or nurseries, and even on Amazon. ![]() While copper fungicides are quite effective in treating many plant diseases, there are some potential side effects such as the disfiguring of leaves and fruit. For the current use of antibiotics on fire blight, make sure to check that the date of publication is current (after 2014). So, if you’d like to research this option more thoroughly, a simple Google search of “antibiotics fire blight” should give you plenty of information. However, I found many resources on antibiotics when doing research on fire blight. Because of them being discontinued, I won’t be covering them in much detail here. Antibiotic SpraysĮven though using antibiotics was effective in treating fire blight at one point, they were discontinued for use in orchards in 2014 due to harmful side effects. So, I did my best to summarize them below and provided some specific information for you in case you’d like to research them further. While I’m focusing more on the organic solutions in this post, I didn’t want to ignore the conventional solutions out there. However, this won’t protect the scion, or upper part of the tree.Īs a side-note: if you’re located in Washington, the best model to predict seasonal spikes of fire blight is CougarBlight. Keep in mind that pruning fire blight is done differently in the summer and winter (more on this later).Īdditionally, you can get trees that are grafted onto a fire blight-resistance rootstock (such as Geneva rootstocks for apple trees). Treatments for Fire Blightīy far, the best practice to prevent and treat fire blight is to prune the diseased branches as soon as you see them. As a result, infected branches commonly turn a reddish-brown, or rust, color. While the browning of the flowers and leaves can sometimes be caused by other issues, such as under-watering, a telling sign of fire blight are the branches’ infamous 180º bend, or “shepherd’s crook”.Īdditionally, some branches might form cankers and start to ooze sap from the bacteria. This is why pruning is highly recommended to combat fire blight. Unfortunately, leaves and flowers typically don’t shed with fire blight, which makes it easier for the bacteria to spread to new branches.
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