Does Topping Increase Yield?
Topping has proven to be a game-changer in how we manage plant yields.
Let’s explore this through the lens of my extensive tests.
Yield Comparisons: Topped vs. Untopped
To thoroughly assess the impact of topping on cannabis yields, we conducted four controlled experiments using identical setups. Each test utilized:
- Clones so that the genetics were the same
- 4x4x6.5ft (120x120x200cm) grow tents
- Spider Farmer SF-4000 450W LED growing light
- 4 plants
Below is a detailed breakdown of the results that clearly contrast the differences between topped and untopped plants across various strains:
| Strain | Condition | Vegetation Time | Yield |
|---|---|---|---|
| Ice Cream Cake | Topped | 5 weeks | 22.3 oz (630g) |
| Ice Cream Cake | Untopped | 4 weeks | 17.6 oz (500g) |
| Mimosa Evo | Topped | 6 weeks | 18.2 oz (515g) |
| Mimosa Evo | Untopped | 4 weeks | 12.7 oz (360g) |
| Master Kush | Topped | 7 weeks | 19.6 oz (550g) |
| Master Kush | Untopped | 5 weeks | 16.8 oz (470g) |
Results demonstrates that topped plants required additional time in the vegetative stage, serving as a critical recovery phase after topping.
This recovery is essential for the plants to resume robust growth and ultimately produce higher yields compared to their untopped counterparts.
This data provides clear evidence of the benefits of topping and higher yields.
Biological Impact on Plants
Topping a cannabis plant disrupts its natural tendency to channel growth energy towards its highest point.
I’ve observed this personally: after topping, the plant reallocates its energy to several lower branches, transforming them into new growth points.
This is key for those seeking abundant harvests.
By creating multiple main colas rather than a single one, the plant optimizes its energy distribution and maximizes light exposure across a broader area.
Benefits and Limitations
Through my personal experience, the benefits of topping are evident, though it’s important to approach this technique with knowledge and care.
Advantages
From a grower’s perspective, topping is essential for managing plant shape and maximizing space efficiency.
The most immediate benefit I’ve noted is the development of a fuller canopy, which not only supports more buds but also improves the overall health of the plant by enhancing light penetration and air circulation.
Uniform canopy ensures that no single cola overshadows another, leading to more consistent growth and ripening of buds.
Risks and Drawbacks
Despite its advantages, topping must be approached cautiously.
It introduces stress to the plant, which can be detrimental if not performed at the optimal time or if the plant is not healthy enough to recover.
I’ve seen cases where topping too late in the vegetative phase or during poor health conditions resulted in stunted growth and delayed flowering.
The key to successful topping is timing and technique.
For the best results, topping should be done when the plant has about 4 to 6 nodes, so it has enough foliage to recover quickly.
It’s better to use clean, sharp scissors, razor or scalper to make a clean cut that heals quickly.
By sharing these insights from my personal experience in cannabis cultivation, I hope to arm you with the knowledge needed to apply topping effectively.
