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What causes rust on plants
I've got a small patch of broad leaf willow herb, I personally like it as does the wildlife, but annoyingly 'rust' has come along and the leafs are covered in it...
I'm going to rip it all up and start a fresh patch next year but i have two questions, how do I prevent it and what causes it? Thank you0
Posts
It is a fungus, so theoretically any fungicide should deal with it. Damp airless conditions tend to help it develop, so getting good airflow round plants does help......a little.