What is Canna Mosaic Virus?
There are several mosaic viruses out there. The one that infects cannas and is frequently referred to as Canna Mosaic Virus is also known as Bean Yellow Mosaic Virus. When it infects cannas, this virus causes yellow mottling or chlorosis of the plant’s leaves between the veins. Eventually, this can lead to plant stunting and death.
What Causes Mosaic on Canna Plants?
Mosaic virus in cannas is usually spread by aphids. It can also be spread by the propagation of already infected plant material. If one plant is both infected with mosaic virus and infested with aphids, the chances of the disease spreading to nearby plants is very high.
How to Treat a Canna with Mosaic Virus
Unfortunately, there is no biological or chemical treatment for a canna plant infected with mosaic virus. Carefully examine cannas before buying them to make sure you don’t start with an infected plant. The best thing to do if your plant is infected is to remove the affected parts of it. This may involve destroying the entire plant. If the plant is also infested with aphids, immediately separate all nearby plants and kill any aphids you find on them. If you’re propagating cannas by cuttings, study the leaves carefully for signs of mosaic virus first to ensure you don’t accidentally spread the disease yourself.
