Bud rot on cannabis flowers
What it looks like
A cola browns from the inside. Sugar leaves pull out with no resistance, and the core is gray or brown. It follows high humidity and a wet flower with no airflow.
What usually causes it
Cut the brown cola out past the rot. Do not leave it in the room. Drop humidity in flower, especially at night, and keep air moving through the canopy. Do not spray flowers to fix rot.
Check this first
Brown, dead flower inside a bud that looked fine outside. Pull that bud. It does not recover. The room was wet and still.
This is identification for a home grow. It is not a pesticide label and not medical advice. Follow your local law.