plant biology
Apical dominance
Last reviewed 2026-10-04
Apical dominance is the tendency of a plant's main growing tip to suppress growth from buds lower on the stem. Chemical signals from the shoot tip influence how strongly side buds grow. Removing or bending the tip can change the balance and encourage branching in many plants.
What it means
The effect varies by species, age, light, nutrition, and growth habit. A plant with strong apical dominance may make one main stem, while a plant with weaker dominance branches more freely. It is a normal growth pattern, not a disease.
How it affects the garden
Pinching or pruning above a node can sometimes encourage side shoots. The result is not guaranteed, and the timing may affect flowering or fruiting. Do not remove the growing tip of a plant unless the crop's growth habit and the desired outcome support it.
The plant spacing calculator helps provide room for branches after training. A plant selection tool can help choose a naturally compact cultivar instead of relying on repeated pruning.
Example
Pinching the tip of a young basil plant can encourage side shoots and create a bushier form. Removing too much at once can still slow growth.
Common confusion
Apical dominance is not the same as plant height. A short plant can have a strong main tip, and a tall plant can branch extensively.
Sources
Oregon State University Extension explains pinching and branching responses in garden plants.
