Humidity pack

Pronounced / hyoo·MID·ih·tee pak /

A packet that releases or absorbs moisture to keep stored flower at a target relative humidity.

Example in a sentence

“He added a humidity pack to the jar to keep the flower from drying out.”

Also called humidity control pack, two-way humidity pack, humidipak

Sources (1)
  1. https://www.leafly.com/learn/growing/harvesting-marijuana/drying-curing-cannabis