Rose Mallow Plants

Rose Mallow Leaves


PEGGY M TUCKER added on April 22, 2017 | Answered

The leaves on my rose mallow turn yellowish brown and shrivel up every year. The flowers don't seem to be bothered. What could be causing the leaf damage? I see no pests.


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ANSWERS
Alisma
Certified GKH Gardening Expert
Answered on April 26, 2017

This could be a disease called hollyhock rust. Please see these articles for more information:
https://www.gardeningknowhow.com/ornamental/flowers/hollyhock/hollyhock-rust-in-gardens.htm
http://hort.uwex.edu/articles/hollyhock-rust/

If it's not that, some other possibilities are discussed in this article:
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/answers-to-what-causes-hibiscus-leaves-turning-yellow.htm

Plants in the hibiscus family, like rose mallow, often develop yellow leaves. They tend to be sensitive to the problems discussed in the above article.

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