Thank you, Nancy H., for finding and sharing this excellent info on Hosta Viruses – especially on Hosta Virus X. Gardeners, be aware that this virus can decimate your hostas, it needs to be addressed - agressively - as soon as you see it. Care must be taken so that it isn’t spread to other hostas.
https://www.delvalhosta.org/hvx?fbclid=IwAR1vhraIEf4M4mSXTEsGz7lxOxCPPPZkl8yK6xd7x_6VQ3onFUreQ7ezaW0