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Hollyhock Rust?

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Question from Gaynor Bramall

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My recently planted Hollyhocks are growing well, about 3ft high. Have just discovered bronze, light coppery flecks. I suspect rust. Looking closer is it magnesium deficiency? Can you please advise. Help very much appreciated. Thanks,
Gaynor.

Hollyhock Rust? (21/09/2010)

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  • Views: 767
  • Replies: 2
  • Posted: Tue. 21st September 2010 16:10

Re: Hollyhock Rust?

Reply from Kathy C

Hi, Gaynor,
Looks like rust to me. Best thing to do is cut it back this autumn and destroy all the leaves - don't compost them because this can help spread the disease. In spring, you can apply a fungicide on new leaves to prevent rust from coming back.
Kathy C

  • Posted: Tue. 21st September 2010 17:59

Re: Re: Hollyhock Rust?

Reply from Gaynor Bramall

Thanks for the info Kathy C.

  • Posted: Tue. 21st September 2010 20:07