Training Timeline Planner

At node 4–6, not at a specific calendar day. Count from the bottom of the plant: the first set of leaves after cotyledons is node 1. When the plant has 4 clear nodes with the 5th emerging, you're ready to top. Cut cleanly above the 4th or 5th node with sterile scissors. Most hybrids reach this stage around day 14–18 from transplant under 18/6. Sativas arrive earlier (day 12–15), indicas later (day 18–21). The tool's day estimates are a starting point — check the plant, not the calendar.

7–10 days for visible signs of resumed growth, and you'll want to see new tops actively growing before starting LST or any further training. Indica-dominant strains reset faster (~7 days); sativa-dominant strains take longer (~10 days) because their more diffuse apical dominance takes more time to reorganize hormonally. During recovery: don't feed heavily, don't stress the plant with transplanting or environment changes, and keep VPD in range. The plant may look stalled for 4–5 days before new growth becomes visible — that's normal.

Yes — each topping doubles the tops. One top = 2 tops. Top both = 4 tops. Top all four = 8 tops. This is the basis of manifold and more aggressive training styles. The practical limit is veg time: each topping adds 7–10 days of recovery, so double-topping adds ~2 weeks to minimum veg duration. Most growers stop at one or two toppings; more than that requires 8–10+ weeks of veg to fully develop. The manifold method is the most structured version of double-topping — it includes a stripping event between tops to create symmetric canopy geometry.

Depends on time available and risk tolerance. Topping produces a wider, denser canopy but requires 7–10 days of recovery that can't be used for other activities. LST produces a similarly wide canopy without recovery time — but requires daily or every-other-day attention throughout veg. For growers with time constraints or autoflowers (where recovery time eats the fixed life cycle), LST is better. For growers doing 6+ week veg with photoperiods, topping + LST together typically outperforms either alone. SCROG is the highest-yield method but needs the longest veg commitment (6–10 weeks to fill the net).

LST only. Autoflowers flower on a fixed genetic schedule (typically beginning at 3–5 weeks from sprout) regardless of light cycle. Topping removes growing time the plant can't recover: the 7–10 day recovery from a single top on an auto represents 15–25% of its total life cycle. Most growers who top autos find the plant yields less, not more, because the canopy doesn't have time to fill out from the additional tops before flower forces maturation. LST is appropriate for autos — it improves canopy spread without any recovery penalty. The tool fires a warning when you select autoflower + topping or manifold.

Manifolding is a two-topping technique that creates 4 symmetric tops from a single hub node. The process: top at node 3 (not 4–6 like standard topping), strip all growth below the two remaining hub nodes, then top each primary branch when it reaches node 3–4. Result: 4 tops from one symmetric hub, all receiving equal light and nutrient flow. Advantages: most even canopy structure of any method, predictable stretch behavior, and maximally efficient use of light. Disadvantages: requires 7–9 weeks of veg minimum, the most technically demanding method, and errors in the hub stripping step compromise the entire technique. Recommended for growers who have 3+ grows under their belt and are willing to commit to a long veg window.

2–7 days before flipping to 12/12. This gives the plant a brief recovery window before the hormonal shift of the light change. Remove large fan leaves blocking lower bud sites and any crossing branches that create shaded pockets. Don't strip the plant — remove leaves that are actively blocking light, not all fan leaves. Plants that are over-defoliated before flip enter the transition phase energy-stressed, which can cause hermaphroditism in stress-sensitive strains. A good pre-flip defoliation opens the canopy so you can see down through it at a 45-degree angle.

FIM (F*** I Missed) is a partial topping — instead of removing the entire growing tip, you remove about 75% of it. The result is 3–5 new growth tips instead of the standard 2 from a full top. In theory, FIM produces more tops from a single intervention. In practice: FIM recovery is less predictable than full topping, the additional tips are often uneven in development, and it's harder to perform accurately. Most growers who experiment with FIM end up returning to clean topping for consistency. The tool treats FIM and topping identically in timing calculations since recovery periods are similar.