Topping
/ˈtɑpɪŋ/
Definition
Topping is a pruning technique that removes the main growing tip, or apical shoot, of a plant. Cutting off this terminal bud reduces apical dominance, the hormone-driven control that suppresses side buds, so lateral branches usually grow more strongly. In gardening, topping most often refers to pinching or cutting back soft new growth to shape a plant or make it bushier, rather than removing large woody branches.
Practical Relevance
- Apical dominance response: Topping reduces the influence of the main shoot tip, a control system called apical dominance. As that control weakens, buds below the cut are more likely to grow into side branches.
- Change in plant form: This practice is used to make some plants shorter, wider, and denser rather than strongly upright. The result can improve canopy shape and spread light more evenly through the upper growth.
- Timing matters: Plants usually handle topping best during active growth, when they can replace lost shoots more readily. Slow-growing, stressed, or newly repotted plants may recover more slowly after the cut.
- Species sensitivity: Not all plants respond the same way. Many branching annuals and vigorous houseplants can push new shoots after topping, while single-stemmed or palm-like plants may not branch from the cut point.
Related Terms
Pruning
Pruning is the horticultural practice of selectively cutting off plant parts, usually stems, branches, shoots, flowers…
Pinching
Pinching is a pruning technique that removes the soft growing tip of a stem, usually with fingers or small snips…
Terminal bud
Terminal bud refers to the bud at the very tip of a stem or shoot. It contains the shoot apical meristem, a region of…
Node
Node refers to the point on a plant stem where leaves, buds, branches, or flowers attach or can develop. It is a…
Stem
Stem refers to the main aboveground plant structure that supports leaves, buds, flowers, and fruits, and connects them…