Rusted Leaves - Knowledgebase Question

Pasadena, CA
Question by tracii
April 13, 2001
My hollyhock leaves look rusted. They have yellow and brown edges and are dying.

Answer from NGA
April 13, 2001


Rust fungi are ever-present in the environment, just waiting for warm, humid conditions to favor their growth. The best deterrent is to grow your hollyhocks in a sunny place with good air circulation to help the leaf surfaces dry quickly and discourage the sprouting of spores. Remove any leaves that have the slivery-gray or orange growth on the undersides. If it looks like you'll be in an on-going battle with this problem, use Gardens Alive's Soap Sheild to prevent future outbreaks. Best of luck!

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