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Discussion id : 70
most recent 12 MAR 03 HIDE POSTS
 
Initial post 12 MAR 03 by Unregistered Guest
What is rust?
REPLY
Reply #1 of 1 posted 12 MAR 03 by Alex Sutton
Rust is a fungus that is most prevalent on the West Coast in the United States, although it is seen elsewhere. Conditions that are favorable to it are rain, the more rain the worse the infestation, and temperatures over 65 F. Orange spores first appear on the underside of a leaf and become visible on the upper surface of the leaf as they become larger. The fungus resembles curry powder.
[From Roses, by Susan Bales, p. 84:] Rust takes the form of small orange or yellow bumps that form on the underside of leaves and then spread to the top of leaves and stems where they become conspicuous... Rust is a problem where summers and winters are mild.
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Discussion id : 60
most recent 12 MAR 03 HIDE POSTS
 
Initial post 12 MAR 03 by Unregistered Guest
What can I do about rust?
REPLY
Reply #1 of 1 posted 12 MAR 03 by Alex Sutton
Prevention is a powerful weapon. Clear the area around the base of the bush of any fallen leaves in the early spring. Later on, remove any leaves that show signs of rust as soon as you see it. There are a number of fungicides that control rust, Funginex is one, but be sure to follow label directions.
[From Roses, by Susan Bales, p. 84:] Prune any diseased parts of the rose.
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