High-Stress Training (HST)

A Guide to High-Stress Training (HST) for Cannabis Plants

Cannabis cultivation is an intricate dance between the grower and the plant, with various techniques employed to optimize yields and enhance overall growth. High-Stress Training (HST) is a category of cultivation methods that involve more aggressive manipulation of the plant, often resulting in increased stress but also potential benefits in terms of yield and structure. In this detailed guide, we will explore what HST is, how it is executed, the optimal timing, and the myriad benefits it offers in terms of light distribution, airflow, overall growth, plant health, and, ultimately, higher yields.

a man holding a plant
a man holding a plant

What is High-Stress Training (HST)?

High-Stress Training (HST) encompasses a range of techniques that involve more drastic and aggressive manipulation of the cannabis plant than low-stress methods. Unlike gentle training techniques like LST (Low-Stress Training) or mainlining, HST methods often involve physically damaging or removing plant tissue to redirect growth hormone and encourage a specific response from the plant.

Common High-Stress Training Techniques:

  1. Topping: Topping involves cutting off the apical (top) growth tip of the main stem to stimulate the growth of multiple colas. This redirects growth hormone auxin to the lateral branches, encouraging bushier growth.

  2. Super Cropping: Super cropping involves deliberately stressing the plant by gently bending and pinching stems, causing them to fold without completely breaking. This method strengthens the plant structure and enhances lateral growth.

  3. Monster Cropping: Monster cropping is a technique where growers take clones from flowering plants. The resulting clones, when grown, exhibit a bushier and more robust growth pattern, producing unique characteristics.

  4. Defoliation: Defoliation involves removing a significant portion of the plant's foliage, which can temporarily stress the plant but allows for better light penetration, airflow, and bud development.

When to Perform High-Stress Training:

The timing for HST techniques depends on the specific method used, but in general:

  • Topping and Super Cropping: These techniques are typically performed during the vegetative stage when the plant is actively growing but has not transitioned into the flowering stage.

  • Defoliation: Defoliation can be performed throughout the plant's life cycle but is often done during the early flowering stage to redirect energy to developing buds.

Benefits of High-Stress Training:

  1. Increased Bud Sites: HST techniques, especially topping, encourage the development of additional bud sites along lateral branches, leading to more colas and ultimately higher yields.

  2. Optimized Light Distribution: By manipulating the plant structure, HST methods can optimize light distribution to lower branches and bud sites, ensuring more efficient photosynthesis and robust growth.

  3. Enhanced Airflow: Despite the initial stress, HST can result in a more open and structured canopy, promoting better airflow between branches and leaves. Improved ventilation reduces the risk of mold and mildew.

  4. Controlled Plant Height: Topping and super cropping allow growers to manage plant height, making it a valuable technique for indoor cultivation where vertical space may be limited.

  5. Improved Bud Quality: The stress induced by HST techniques can lead to denser and more resinous buds, potentially enhancing the overall quality of the harvest.

  6. Adaptability to Training Goals: HST techniques provide growers with a range of options to tailor their plants to specific goals, whether it be maximizing yield, managing height, or improving overall plant health.

Conclusion:

High-Stress Training represents a more assertive approach to cannabis cultivation, demanding a careful balance between stress and potential benefits. Topping, super cropping, and other HST techniques offer growers the tools to sculpt and optimize plant growth, leading to increased bud sites, improved light distribution, and potentially higher yields. Whether you're an experienced cultivator or a novice, incorporating HST into your cannabis cultivation strategy can bring a new level of control and customization to your growing experience.