You can't improve bud after harvest, but you can absolutely ruin it. A rushed dry destroys terpenes; a bad cure grows mold. The difference between harsh grass-smelling bud and smooth, loud, jar-worthy flower is entirely in these two-plus weeks.
Why drying matters more than you think
Fresh-cut cannabis is roughly 75% water. As that water leaves, two parallel processes determine the final product:
Chlorophyll breakdown. Chlorophyll is what makes fresh plant material taste harsh and "green." It breaks down slowly during a controlled dry — but only if the dry is slow enough. Speed-dry in three days and the chlorophyll stays locked in.
Terpene preservation. Terpenes are volatile — they evaporate at low temperatures. The slower and cooler the dry, the more terpene profile you keep. This is why a properly dried and cured bud smells ten times louder than one that was dried in a cardboard box with a fan.
Drying: the 60/60 rule
Hang branches in darkness at 60 °F / 60% RH (15–16 °C / 55–62%) with gentle indirect airflow. The target is a slow, even 7–14 day dry. Fast-dried bud (3–4 days) smells like hay because the chlorophyll never broke down and the volatile terpenes boiled off.