Hi! I need your help! I have a Guarianthe and I was really happy when it started growing a sheath. However my happiness didn't last long as one day I found a small black stain on the sheath. In record time the stain has spread despite me cutting the damaged area, trying to stop the infection or whatever that was. It's slowly "eating" the sheath. I'm 100% sure water hasn't fallen in that area and I'm careful with the waterings. The roots are healthy and the rest of the plant is healthy. Does anybody know what this might be or what I might be doing wrong? Thank you for reading!
This is the link since I'm afraid the image won't show up:
Guarianthe - Imgur
(The picture was taken before I removed that black area)
Guarianthe sheath
Linear Mode
