Why does pinching off the top shoot of a plant make it grow bushier?
The growing tip produces auxin, which travels down and suppresses the side (lateral) buds — this is apical dominance.
The growing tip produces auxin, which travels down and suppresses the side (lateral) buds — this is apical dominance. When you pinch off the tip, you remove that auxin source, so the lateral buds are released from suppression and start growing into side branches. The result is a fuller, bushier plant. Gardeners use this trick on hedges and herbs deliberately.
Key point
The tip's auxin suppresses side buds; removing the tip releases them, making the plant bushy.
Common mistake
thinking cutting the top stunts the whole plant.
Memory tip
cut the tip → remove auxin → side buds burst out → bushier plant.
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