Elm Yellows—Methods for Controlling EY

Yellow, wilting leaves on an infected tree next to a non-infected tree. Photos courtesy Joe Boggs

By Joe Boggs and Francesca Peduto Hand, PhD

The most effective method for controlling EY is to quickly remove and destroy infected trees. This reduces localized reservoirs of the phytoplasma pathogen, making new infections less likely.

Thankfully, EY does not appear to be following the same trajectory as DED relative to presenting a widespread threat to elms. Thus far, the disease has appeared as sporadic localized outbreaks; however, given the dire prognosis and drastic response required for control of EY, a field diagnosis should never serve as the final word on elm yellows. Stem samples should be sent to a plant diagnostic clinic for confirmation of a suspected infection.

Read the full article: Elm Yellows: The Re-Emergence of an Old Tree Killer

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