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Old 06-16-2018, 05:12 PM
 
835 posts, read 327,796 times
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I have rust in my peonies, and and applied Sulfur Guard, but nothing has happened. Does anyone here know something better? Greatly appreciated.....Thank you,
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Old 06-16-2018, 09:41 PM
 
Location: Out there somewhere...
38,684 posts, read 45,045,110 times
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Fungicides approved for peonies include captan, copper sulphate (try Lilly Miller Micro-Cop), Daconil (chlorothalonil), Mancozeb, Maneb, Bravo or professional fungicides such as Decree, Chipco 26019 or Cleary's 3336 (thiophanate methyl). A new systemic fungicide is TM85 and another is offered by Cleary's.

These web sites should help you...
Brown Leaves on a Peony | Home Guides | SF Gate

Peonies need... - A&D Nursery
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Old 06-19-2018, 11:52 PM
 
Location: Mid-Atlantic
22,710 posts, read 21,760,954 times
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This thread caused me to remember that... Rust Never Sleeps.
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Old 06-20-2018, 08:52 AM
 
Location: South Carolina
13,107 posts, read 17,646,574 times
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I use daconil on all my flowers from roses to zinnias and on my tomatoes should they need it .
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