Humidity Packs

Why Growers Rely on Humidity Packs

After harvest, moisture management becomes one of the most critical steps in protecting your crop. Too much humidity invites mold, mildew, and degradation; too little humidity dries your material out, reducing weight, volatility of terpenes, and overall quality. Two-way humidity packs automatically balance this equation. They continuously monitor the air inside a sealed container and add or remove moisture to hold a precise relative humidity, creating a stable microclimate that keeps your harvest in its ideal zone.

Key Benefits for Indoor Farms, Greenhouses & Vertical Grows

Whether you are running an indoor hydroponic farm, a greenhouse, or a vertical grow, humidity packs help you maintain quality long after lights turn off. They extend shelf life, reduce loss from overdrying, and minimize the risk of mold during storage and curing. Because they are passive and easy to use, they also simplify standard operating procedures for staff, making post-harvest handling more consistent from batch to batch.

Uses & Applications of Humidity Packs

Humidity packs are designed for sealed environments such as jars, bins, bags, totes, and curing containers. Growers commonly use 55% humidity packs for long-term storage where a slightly drier environment is preferred, and 62% humidity packs for curing or short- to mid-term storage where maintaining pliability and aroma is a priority. They are ideal for:

• Curing harvested flowers in jars or totes
• Protecting finished product during long-term storage
• Stabilizing humidity in transport or distribution packaging
• Maintaining quality of sensitive herbs, botanicals, and dried produce

55% vs 62% Humidity Levels

Choosing between 55% and 62% relative humidity depends on your post-harvest goals. Around 55% RH is often preferred for long-term storage where a firmer, drier final product is desired and where minimizing mold risk is critical. Around 62% RH is popular for curing or for growers who want to maintain softer material with robust aroma and flavor. Both options help avoid the wide humidity swings that can occur when containers are opened and closed, which is essential for maintaining consistency across your inventory.

Types of Humidity Packs in This Collection

Our Humidity Packs collection at GrowersHouse includes a range of sizes and formats so you can match the pack to the volume of material you are storing. Smaller packs are ideal for jars and small containers, while larger packs are suited for bins, bags, or bulk storage. All feature two-way humidity control, are easy to place directly into your container, and are disposable once exhausted, reducing maintenance and equipment costs compared to active humidification systems.

Frequently Asked Questions

What is the best humidity for hydroponics?

For active hydroponic growing environments, many growers aim for roughly 50–70% relative humidity during vegetative growth and around 40–60% during flowering, depending on temperature, air movement, and plant density. After harvest, the ideal humidity inside sealed storage or curing containers is typically in the mid-50s to low-60s percent RH, which is why humidity packs are commonly offered in 55% and 62% options. These ranges help limit mold risk while keeping plant material from becoming too dry and brittle.

How long does it take for humidity packs to work?

In most cases, humidity packs begin adjusting the environment immediately and can bring a properly sized, sealed container close to the target humidity within several hours. For larger containers, very dry or very moist starting conditions, or containers that are opened frequently, it may take 24–72 hours for humidity to fully stabilize. As long as the pack is not physically hardened or dried out, it will continue to regulate humidity for weeks or even months, depending on container size and how often it is opened.

How to control humidity in hydroponics?

To control humidity in a hydroponic grow room, combine good airflow and ventilation with equipment such as dehumidifiers or humidifiers, depending on your climate and plant stage. Proper air circulation, canopy management, and temperature control all help keep relative humidity within target ranges. After harvest, switch from room-level control to container-level control: place appropriately sized humidity packs in sealed jars, bags, or bins to maintain a stable microclimate for curing and storage. Together, room humidity control during growth and humidity packs during storage give you complete moisture management from seedling to finished product.