Rust fungus disease is a common issue for gardeners. Its presence in your garden can signal significant trouble.

Rust disease is caused by a fungal parasite that thrives on living plants. This disease can often occur in mild, moist conditions. The fungus can spread by spores that are transferred from infected plants to healthy plants. When left unchecked, the fungus can kill younger plants and stunt the growth of established ones.

The rust fungus normally prefers a specific set of conditions to infect a plant and begin reproducing. They need dark, damp, and warm weather for the spores to attach to the plant and germinate.

In the early stages, the rust can be identified by small black spots on the undersides of leaves or around the plant stems. These spots then become surrounded by rust-coloured patches, which can range from yellow through red to brown. As the infection grows, these patches form little clusters that look like aphids.

Some commonly affected plants include roses, geraniums, snapdragons, tomatoes, garlic, and even beans.

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How to treat rust infections

Unfortunately, there is no real solution to a rust infection. Chemical fungicide sprays can be effective, but with such a wide range of rust species to deal with, treating it can be hit and miss.

These few rust control tips can help you manage the rust infestation: 

You need to remove and destroy all leaves and parts of the plants affected.

You might have to destroy badly infected plants completely to help prevent them from infecting other plants.

Spray the plant with a suitable rust control product containing a fungicide

Keep removing any plants that still show signs of rust.

Good garden hygiene and proactive measures can help keep rust infestation to a minimum.

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