Supercropping (Cannabis Growing)
Supercropping is a high-stress training (HST) technique where a grower intentionally softens and bends a plant’s stem to change its growth direction. The stem is gently crushed between the fingers before being bent over, allowing it to heal in a reinforced position.
The goal is to control plant height and redistribute growth hormones.
What Does Supercropping Do for Cannabis Plants?
Supercropping works by interrupting apical dominance, which shifts energy from the main top to lower branches. This can result in:
- More even canopy growth
- Stronger, thicker stems
- Improved light penetration
- Increased number of productive bud sites
The bent area typically heals into a hardened “knuckle.”
Supercropping and Autoflower Cannabis
Supercropping can be risky with autoflowers due to their limited recovery time.
If used on autoflowers, it should be:
- Done very early in vegetative growth
- Applied sparingly to vigorous plants only
- Avoided once flowering begins
Late or aggressive supercropping can stunt autoflowers and reduce yields.
How Supercropping Is Done
A basic supercropping technique involves:
- Gently pinching the stem between fingers
- Rolling the stem to soften internal fibers
- Bending the stem over at a controlled angle
- Supporting the bend if needed
The outer skin of the stem should remain intact.
Supercropping vs LST
Key differences include:
- Supercropping: High stress, stem damage, healing response
- LST: Low stress, gradual bending, no crushing
LST is generally safer for autoflowers, while supercropping is more common with photoperiod plants.
Common Mistakes When Supercropping
- Bending stems too late in flower
- Breaking the stem completely
- Applying stress to weak or unhealthy plants
- Using supercropping repeatedly on autoflowers
Recovery time is critical when using HST techniques.
Is Supercropping Worth It?
Supercropping is most useful when:
- Managing height in vigorous plants
- Correcting uneven canopy growth
- Growing photoperiod plants with long veg times
For autoflowers, supercropping should be used cautiously or avoided entirely.
Quick Summary
- Supercropping is a high-stress training technique
- Involves crushing and bending stems
- Redirects growth and strengthens branches
- Risky for autoflowers if done late
- Best used sparingly and early