
MichiganDot
Answered on April 16, 2019
Yellowing is a sign of stress in rose leaves so there is no simple answer to your question. Read the attached article on rose leaf yellowing. If you don't find an answer that fits your situation, take a small cane or several leaf clusters to your extension service office. The Master Gardeners and extension staff may be able to pinpoint the cause. Find your county's extension office at this website: Extension.Search.org
https://www.gardeningknowhow.com/ornamental/flowers/roses/yellow-rose-leaves.htm
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