1 aster yellows | Definition of aster yellows
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aster yellows

plural noun

Definition of aster yellows

: a widespread disease affecting more than 40 families of plants, characterized especially by yellowing and stunting, and caused by a phytoplasma transmitted by leafhoppers

First Known Use of aster yellows

circa 1907, in the meaning defined above

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More from Merriam-Webster on aster yellows

Britannica.com: Encyclopedia article about aster yellows

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