I had just a few short yellow leaves on my main cola that were easily pulled off and brown at the base. Pictura attached. Airflow good on the plants outdoors but it has been hot and humid. Is this bud rot? If so what should I do?
Really can't tell. Keep a close eye on it. My guess would be a calmag deficiency caused by too much P and K. If you've noticed rust spots on any larger leaves, this could confirm.