Cola
Definition: A cola is the cluster of tightly packed buds that forms along the top of a cannabis stem or branch. The main cola, also called the apical or top cola, grows at the tip of the central stem and is usually the largest and densest bud on an untrained plant. Training techniques create multiple colas of similar size.
How Cola works
Cannabis grows with apical dominance: the main tip produces hormones that slow side branches, so untrained plants form a Christmas-tree shape with one big central cola and smaller buds below. That top cola sits closest to the light and receives the most energy.
From one cola to many
- Topping: removing the main tip splits growth into two new top colas.
- LST: bending the main stem sideways lets lower branches rise to the same height.
- SCROG: a screen spreads 8 to 20 or more branches into an even canopy, each finishing as its own cola.
- Mainlining: builds a symmetrical plant with 8 or 16 equal colas.
Several medium colas often outweigh one giant one, because more bud mass sits in the brightest part of the light footprint, typically the top 12 to 18 inches of canopy indoors.
Big cola risks
Large, dense colas trap moisture. In late flower, keep humidity under 50% and aim airflow through the canopy, since bud rot usually starts deep inside the thickest buds where you cannot see it. Heavy colas can also snap branches, so stake or trellis them by mid flower.