Your Garden 'Horrorscope' - Rose Rust

We have observed in our clients and our own gardens that a moist spring can create conditions ideal for rust development on roses. Rust flourishes when the temperature is between 64-70˚ F and moist foggy conditions. The life cycle of rust is 10-14 days, so repeated treatment to get rid of it is necessary.

Rose with Rust on the Leaves

First, remove as many of the infected leaves as possible. This includes fallen leaves.

Then, start a 10-14 day spray cycle of either an organic or synthetic fungicide. Follow the directions carefully to make sure you are using it properly.

As the weather warms and there are less foggy mornings, the conditions will become less hospitable for rust.