Just when you thought all the bugs and slugs were getting worse, here I am with another, more serious problem for hosta...Hosta Virus X (HVX). HVX is a serious viral disease that I learned about last year in a hosta Facebook group. HVX has been around since about 1985, but if you haven't had a reason to investigate changes in your hosta plants, or stumbled on the information like I did, you may have never heard of it.
HXV affects hosta plants, causing significant damage to their foliage. This virus can spread quickly and have a detrimental impact on the overall health and appearance of hostas.
What are the symptoms of Hosta Virus X?
Hosta Virus X typically presents with symptoms such as mottling, streaking, and distortion of the leaves. Infected plants may also exhibit stunted growth, reduced vigor, and overall decline in health. It is essential to identify these symptoms early to prevent the spread of the virus to all of your hosta beds. Click here for examples.
How does Hosta Virus X spread?
Hosta Virus X is primarily spread through the movement of infected plant material. This can occur through the use of contaminated tools, plant handling, or close proximity to infected plants. Once a plant is infected, the virus can quickly spread throughout the entire hosta population in a garden.
Can Hosta Virus X be controlled?
Unfortunately, there is no cure for Hosta Virus X once a plant is infected. Removing the hosta and all the roots is the best method of control. Do Not Compost the infected plant, but bag for garbage pick-up or burn it. It is crucial to purchase hosta from reputable sources, practice good sanitation in the garden, and promptly remove and destroy any infected plants to prevent the spread of the virus. Do not plant another hosta in the same spot, as the disease will remain on any plant material not removed.
Need to learn more?
HVX is a rabbit hole I've gone down and I don't look at my hosta the same way. I'm always looking and inspecting with a critical eye of signs. I've stopped buying hosta at big box stores, as Hosta Virus X can have significant implications for my garden.
I am not an expert, but I can help you learn more. Here are a few sites that have more information and pictures of infected plants so you know what to look for.
https://hort.extension.wisc.edu/articles/hosta-virus-x/
https://www.hostalibrary.org/firstlook/HVX.htm