Q.Do You Know What This Could Be?
I have hostas along the north side of my house. Only one of them is like the picture I’m attaching. I dug up one when I noticed it, then planted another one there. Same thing is happening to it. Please help, I don’t want it to spread to the other ones as they are all very healthy. It is only happening in the one location.
Certified GKH Gardening Expert
This appears to be Southern Blight of Hosta- Very bad for the garden.
This spreads, quickly, and will decimate your Hostas. Removal and treatment will be paramount:
https://www.gardeningknowhow.com/ornamental/foliage/hosta/controlling-hosta-southern-blight.htm