Top Harvesting Tips for Solventless in 2024

The Press Club Top Harvesting Tips for Solventless in 2024
Viviane Schute        

Cannabis enthusiast and student of the art of solventless extraction

 

Table of Contents

Intro
Pre-Harvest Prep Work
Harvesting Process
Bucking and De-leafing
Storage and Transportation
Conclusion

Intro

Harvesting your cannabis flowers is one of the most critical stages in solventless cannabis concentrate production, with a direct impact on both resin yield and final extraction quality. Whether you're an outdoor grower dealing with unpredictable weather or an indoor grower with dialed-in precision, implementing the right pre-harvest and post-harvest strategies can make a significant difference in the solventless extracts that come from your plants.

In this article, we will explore key practices from pre-harvest preparation to bucking, de-leafing, and freezing, all aimed at improving your operational efficiency and ensuring top-quality yields. By following these tips, you can minimize labor bottlenecks, protect delicate trichomes, and maximize the potential of your crop from field to storage. 

Ready for the Top Harvesting Tips for Solventless in 2024? Let’s dive in.

Pre-Harvest Prep Work

1. Pre-harvest defoliation

Effective pre-harvest preparation is essential for minimizing labor and improving the quality of your resin. One of the most important steps during this phase is defoliation, the process of removing excess leaves from the plant. By defoliating one to two weeks prior to harvest, you reduce the need for heavy leaf removal during bucking, streamlining your workflow while maintaining the integrity of the plant.

While some growers prefer to defoliate during the bucking stage, pre-harvest defoliation is often more efficient at scale, saving you both time and labor during your busy harvest season. There are other benefits too, like a reduced chance of bud rot in the final weeks before harvest, which are often wetter outside. Additionally, it helps to minimize bottlenecks later in the harvesting process, keeping the entire workflow smoother and more efficient.

Read more in our article Defoliating Cannabis Plants Before Harvest for Solventless Processing.

2. Prepare your equipment

Make sure your storage bins and bags are ready, your trimmers sharp and clean, and the freezers are cleaned out. Plug in the freezers a few hours before you harvest so they are freezing cold when you place the buds inside. 

Read more in Equipment for Preparing Fresh Frozen Cannabis.

Harvesting Process

Harvesting is a delicate balance between timing, technique, and environmental factors. By following a few best practices, you can maximize the quality of your product while minimizing the potential for damage during this critical stage. 

1. Timing is Everything

For both outdoor and indoor growers, harvesting at the right time is crucial. Inspecting your plants for trichome ripeness is the best way to gauge the ideal harvest window. For indoor growers, it's easier to fine-tune this timing, but outdoor growers must also factor in weather conditions. If there's a risk of mold or bud rot due to wet or humid weather, it's better to harvest earlier to prevent crop loss.

The Press Club Top Harvesting Tips for Solventless in 2024

Look for each trichome to have amber hues, which is easiest to do using a jeweler's loupe. 

Read more in our article How To Harvest Cannabis for Peak Trichome Ripeness.

2. Temperature Considerations  

Bringing plants from vastly different environments, such as a cold outdoor field into a warm processing room, or vice versa, can cause rapid wilting or excessive condensation. This can lead to trichome damage, decreased quality, and issues with mold during extraction. 

Keep your processing room nice and cold, and aim to freeze the plants immediately after harvest. 

Read more in Top 10 Tips on How To Prepare Your Harvest for Fresh Frozen.

3. Minimizing Touch Points 

Every time you handle your plants, you risk damaging the trichomes, which are crucial for maintaining potency and quality. One effective way to reduce touch points is by harvesting whole plants and transporting them in a way that minimizes bud-to-bud contact. A popular method is to cut individual branches and stack them vertically in bins, with the stems facing down. This prevents buds from being compressed, especially those at the bottom of the bin, and ensures that they retain their shape and quality.

4. Workflow 

A well-organized team is essential to an efficient harvest. For outdoor growers, where timing can be unpredictable, having skilled labor on standby can be the difference between a smooth harvest and one plagued with delays. Indoors, the challenge is ensuring that there are no bottlenecks between cutting, bucking, and transporting the plants to the next stage. The key is having the right number of people performing specific tasks at each stage, with minimal wait time between steps. This not only maintains product quality but also saves on labor costs.

By carefully managing these factors—timing, temperature, handling, and labor—you can streamline your harvesting process and ensure that your plants are processed quickly and efficiently, preserving the quality you’ve worked so hard to cultivate.

Bucking and De-leafing

The Press Club Top Harvesting Tips for Solventless in 2024

Bucking and de-leafing are critical steps in the post-harvest process, where careful handling can greatly influence the quality of your final product. These procedures involve stripping the buds from the stems (bucking) and removing any remaining leaves (de-leafing) before the plant material is prepared for further processing. The goal is to perform these tasks efficiently while minimizing damage to the delicate trichomes that contain essential cannabinoids and terpenes.

1. Hand Bucking Techniques 

Hand-bucking is the preferred method. Hand-bucking allows for greater control and care, with a single cut used to remove the bud from the stem. This gentle approach helps preserve the structure of the buds and ensures minimal damage to the trichomes, leading to a higher-quality final product.

Avoid cutting leaves off the plant halfway through (remove all leaves from the base of the stems). Handle the buds with finesse! 

2. Bucking Bud Size

Aim to cut quarter-sized pieces of buds, and don’t leave pieces of stems hanging from the buds. More stems and leaves means more potential chlorophyll contamination. 

3. Labor Organization and Efficiency

Properly trained staff are essential to this process. It’s helpful to rotate team members between different tasks so that everyone understands the entire workflow, from prepping plants for the bucking machine to bagging and freezing. This reduces errors and ensures a faster, more efficient harvest.

Also be sure to properly label bins and bags to keep cultivars separate and easily identifiable. 

Storage and Transportation

Proper storage and transportation are crucial to maintaining the quality of your harvest. After all the hard work put into harvesting, bucking, and freezing, the way you handle your product during storage and transportation can make or break the final result. Keeping plant material at the ideal temperature and minimizing handling during transport are key to preserving trichomes, preventing contamination, and ensuring your product remains as fresh as possible.

1. Ideal Storage Conditions

Once your cannabis has been bucked, de-leafed, and frozen, it’s important to store it at the right temperature to avoid degradation. We recommend storing in a regular chest freezer. This temperature is cold enough to maintain the integrity of the buds without risking freezer burn or excessive brittleness, which could damage the trichomes. Freezing the buds too cold can cause the plant material to become overly brittle, increasing the risk of breakage during handling.

2. No need to vacuum seal

Unless you’re very careful, vacuum sealing can crush trichomes and negatively impact the quality. Instead, loosely pack the material in plastic bags and remove most of the excess air manually to prevent damage. Leaving some air inside to create a pillow effect will help prevent crushing when bags are stored on top of each other in the freezer. 

3. Avoiding Thawing and Refreezing

Once plant material is frozen, keeping it at a consistent temperature is critical. Avoid any thawing and refreezing, as the process can cause cellular breakdown in the plant, leading to moisture release and degradation of cannabinoids and terpenes. Thawed cannabis tends to wilt, develop a swampy smell, and may release chlorophyll, which can negatively affect the final product's flavor and potency. To prevent this, always ensure that storage freezers and refrigeration units are reliable and maintain a stable temperature.

4. Organization in Storage

An organized storage system can significantly improve workflow and prevent quality loss. For long-term storage, it’s a good practice to label your bins or bags clearly, ensuring you can access specific batches easily without having to disturb other material. If you are using large storage containers like super sacks or bulk totes, stack them carefully to avoid crushing plant material and creating unnecessary handling. For smaller batches, freezing on trays is ideal as it reduces condensation and damage.

In larger-scale operations, it may be tempting to fill freezers or storage units to maximum capacity, but it’s important to leave space for air circulation and ease of access. You don’t want to risk thawing batches of frozen material every time you need to access a specific lot.

5. Transportation Best Practices

When it comes to transportation, maintaining the cold chain is essential. For short distances, a well-insulated van or vehicle with a refrigerated unit can suffice. Using coolers and other insulated vessels is best. 

Conclusion

Achieving a high-quality cannabis harvest doesn’t stop at the field or grow room—it requires careful attention throughout every stage of post-harvest handling. From pre-harvest defoliation to minimize labor and chlorophyll contamination, to thoughtful bucking, de-leafing, and packaging procedures that protect your trichomes, every step contributes to the final product's quality and yield.

Proper storage and transportation are just as critical to ensure the harvested plant material remains fresh, potent, and free from contaminants. By maintaining optimal freezing conditions and avoiding common mistakes like vacuum-sealing fresh product or letting material thaw during transport, you can safeguard your hard work and deliver the best possible end product.


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