A Technical Report from The Bartlett Tree Research Laboratories
Fire blight is a very destructive disease on many species in the rose family, including pear, crabapple, cotoneaster, mountain ash, hawthorn, pyracantha, spirea, and rose.
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- I lost one of my pear trees last year and now this year I seem to be losing another The leaves start to turn yellow and they get black on the tips. I thought it might be fire blight, but I do not notice any cankers. Any help would be appreciated.
- Is Arborbiotic injected into the root collar or trunk flair? I understand that Arborbiotic injections may not completely control fire blight on a Callery 'Redspire' pear (Pyrus calleryana) even with a fertilization program using Forti Phite plus calcium and the tree will need to be injected every year. I also understand the branches that are infected with fire blight will need to be pruned six inches back from the infection and pruning tools sterilized after each pruning cut.