An Introduction to Vapor Pressure Deficit

By Haley Bridgnell

How well do you understand temperature and relative humidity? By Harry Connor Vapor Pressure Deficit (VPD) is used by growers to assess how dry the air is at a given moment. If the air is too dry, photosynthesis will stop in order to protect the plant from exhaustion. Photosynthesis is the process of converting sunlight,…

How to Reduce Heat in Your Greenhouse with Shade Paint

By Haley Bridgnell

Summer is almost here! As outdoor temperatures begin to rise, greenhouse temperatures rise as well. Luckily, there are a few methods for reducing the amount of heat that enters your greenhouse. Here at Ceres, we think that shade paint is a great way to reduce greenhouse temperatures. Shade paint can be applied once your greenhouse…

Odor Control for a Cannabis Greenhouse

By Haley Bridgnell

The following is an edited version of our article on cannabis odor control strategies for grow rooms and commercial greenhouses, published in High Times. — Sweet, skunky, minty, fruity… the aroma of cannabis is an essential feature of the crop, and a key indicator of quality and characteristics. Cannabis’ odor is created by terpenes, oil-producing compounds…

5 Things to Look for in a Light Deprivation System

By Haley Bridgnell

As commercial cannabis production shifts to advanced year-round greenhouses, both growers and the environment stand to benefit. Greenhouses are many times more energy-efficient than indoor grow rooms and can provide precise environmental control. Essential to control is a light deprivation system, which allows greenhouse growers to control the photoperiod, allowing for the 12/12 cycle required…