Freeze Drying

Marijuana Horticulture

by Jorge Cervantes

Dry ice is frozen carbon dioxide. When it warms, CO2 converts from a frozen solid to a gas, without turning into a liquid. When moist marijuana is enclosed with dry ice at virtually zero relative humidity, water molecules migrate from the cannabis to the dry ice. This causes the relative humidity of the CO2 to increase and the moisture content of the marijuana to decrease. This process occurs below 32F and it preserves cannabis.

Place equal amounts of dry ice and bud into container. Put the dry ice on the bottom and bud on top. Seal with a id. Make a few small holes in the lid of the container for excess gas to exit. Place in your kitchen freezer. Check every 12-24 hours. When the dry ice is gone, the buds should be completely dry. If not dry, add more dry ice until cannabis is dry. Conserve dry ice by partially drying buds for a few days before enclosing with dry ice.

This method retinas potency and freshness and causes very little degradation of resin glands from heat, light, air, and fondling hands. The smoke has a mint-like taste because the chlorophyll does not break down.