Topping Super Silver Haze

What topping is

Topping is the removal of the apical (top) meristem of a cannabis plant. Cutting off the dominant growing tip breaks apical dominance — the hormonal signal (driven largely by auxin produced in the shoot tip) that suppresses growth of side branches ^[1] Strong evidence. After topping, the two nearest axillary buds take over and grow into co-dominant main stems, producing a bushier, flatter plant.

This is standard horticultural practice and is not specific to cannabis; it's the same principle used on tomatoes, basil, and ornamentals ^[2] Strong evidence.

Super Silver Haze is a sativa-dominant hybrid (Haze x Northern Lights x Skunk) bred by Green House Seeds in the late 1990s. It is known for vigorous vertical stretch, long internodes, and a 10-11 week flowering window ^[3]. Those traits are exactly why growers reach for training techniques like topping.

Why growers top Super Silver Haze specifically

Left untrained, SSH behaves like a classic Haze: one tall central cola, sparse lower branching, and an unmanageable canopy in a typical 1.2m x 1.2m indoor tent. Topping is used to:

• Control height. SSH can double or triple in size during flowering stretch ^[3] Strong evidence. Topping in veg shortens the final plant.
• Even out the canopy. Multiple co-dominant tops sit at similar heights under the light, improving light distribution.
• Create more bud sites. More main colas means more large flowers instead of one giant top and a lot of larf.

What topping does not reliably do is increase total yield. Controlled studies on cannabis training are sparse; most yield claims circulating online are anecdotal Anecdote. A 2020 review of cannabis training techniques noted that while topping reshapes the canopy, peer-reviewed quantification of yield effects is limited ^[4] Weak / limited. Treat topping as a shape tool, not a magic multiplier.

When to start (and when to stop)

Earliest: After the plant has 4-6 true nodes and is growing vigorously. Younger plants don't have the energy reserves to recover quickly.

Latest: At least 2 weeks before flipping to a 12/12 flowering schedule. Topping triggers a stress response and a brief growth pause (typically 3-7 days) Weak / limited. With SSH's already-long 10-11 week flower, you do not want to add recovery time inside the flowering window.

Avoid topping when:

• The plant is showing nutrient deficiency, pest damage, or heat stress.
• You've just transplanted (wait ~5-7 days).
• You're already in flower. Topping in flower will not produce two new colas; it will just remove a cola you were going to harvest.

How to top, step by step

1. Sterilize your tool. Wipe scissors or a razor blade with isopropyl alcohol (70%+). This is standard horticultural practice to reduce pathogen transfer ^[2] Strong evidence.
2. Identify the top. Find the youngest fully-formed node at the apex. You'll see a small new shoot emerging from the center.
3. Cut above a node. Snip the main stem cleanly just above the node where you want the new tops to form. Most growers cut between the 4th and 6th node, leaving the lower nodes intact.
4. Leave the cut open. Cannabis seals over quickly. Do not apply sealants or pastes — they're not needed and can trap moisture.
5. Wait. Within 3-7 days, the two axillary shoots at the node below your cut will swell and begin growing as new co-dominant tops.
6. Optional: top again. Once each new top has grown out 4-5 nodes, you can top each of them to produce 4 colas (and so on, in a technique sometimes called "mainlining" or "manifolding" ^[5]).
7. Flip to flower with enough buffer. Give the plant at least 10-14 days to recover and bush out before switching to 12/12. With SSH, allow extra veg time to account for its long flowering period.

Common mistakes

• Topping too late. Topping a week before flip means you spend the first two weeks of flowering recovering. With an 11-week strain, that's an expensive mistake.
• Topping a stressed plant. Adding a wound to a plant fighting deficiency or pests compounds stress. Fix the underlying issue first.
• Cutting too low. Removing too many nodes leaves the plant with nothing to work with. Always leave at least 3-4 healthy nodes below your cut.
• Dirty tools. Bacterial or fungal contamination of the open cut is a real risk, especially in humid grow tents ^[2] Strong evidence.
• Believing yield-percentage claims. "Topping doubles your yield" is folklore Anecdote. Yield depends on light, genetics, pot size, nutrients, and grow time — topping just changes plant shape.
• Topping autoflowers aggressively. Not relevant to standard SSH (a photoperiod strain), but worth noting if you're growing the autoflower version — autos have a fixed timeline and react worse to high-stress training Weak / limited.

Related techniques

• FIMing: A variant where you pinch off ~75% of the apical tip instead of cutting it cleanly. Can produce 3-4 new tops instead of 2, but with messier results.
• Low-stress training (LST): Bending and tying branches without cutting. Often combined with topping.
• ScrOG (Screen of Green): Training tops through a horizontal net. Pairs well with topping for tall sativas like SSH.
• Mainlining / manifolding: A structured sequence of repeated toppings to build a symmetric, even canopy.
• Defoliation: Selective leaf removal. A separate debate with its own evidence problems.

Sources

How this page was made

Related

• Low-Stress Training (LST) — A gentle plant training technique that uses bending and tying to flatten the canopy and ex...
• Super Silver Haze — A long-flowering sativa-leaning hybrid that helped define 1990s Dutch cannabis and still s...