Cactus Blog 

Ferocactus Disease

Posted March 16, 2013 7:22 am & filed under Misc.

Can you help me identify the disease on the cactus picture attached?

Thanks — Rich

Rich,

It looks like it is a form of “Rust” which is a fungus and is usually treatable with Neem Oil, a natural dual purpose fungicide and insecticide that is easy to use.

Take care,

Hap