we will look at rust fungi now.
Rust is first identifiable with the appearance of small yellow spots on the upper leaf surface. Under the leaf, directly beneath the spots there are powdery blisters containing spores. The millions of spores are distributed by rain/water splash or wind.
Rust can be difficult to control. The most effective means is to identify the fungus early and remove affected leaves, including fallen leaf debris. The leaves should be placed in a sealed bag for disposal or burnt. Never place infected debris in the compost bin.
control.
Rust can also be controlled with sulphur, and homemade sprays made from Chamomile, or a blend of Chive, Horseradish, Elder and Casuarina leaves.
some fungicides can also be used but can be ineffective, the best way to control rust is to remove and destroy infected leaves.
please feel free to add to this article. the more information we have the easier it will make for the site to be able to have a catalogue of information.
personal experiences, home made fungicides, anything is welcome
jamie
this information has been sourced from various site on the internet.
taking the top half of trees of since 2005! 
