Help w/ Den. Spring Dream "Apolon"
 

Hello everyone,
This morning when checking my plants :( I found the two new growth in my Den. Spring Dream had what look like water log or crown rot if that makes sense. Pictures are attached.

What I did was cut into healthy tissue w/ a sterile blade and applied cinnamon to the cut, I inspected the rest of the plant and it looks good, apart from currently loosing some old flowers.
:scratchhead:
Question is should I isolate the plant?

Should I treat it with a fungicide or wait a see?:fight

Thank you for all your help.

I truly don't know. But hopefully someone will help you out!!

I think you did the right thing. I would wait and see and take further action if it seemed to spread.