Removal of a branch at its point of origin, where it attaches to the parent stem or a lateral side branch, is called:

• A. Heading back
• B. Rejuvenation
• C. Thinning
• D. Renewal pruning

Answer: (C)

In pruning, thinning means removing a branch right at its point of origin, where it attaches to the main stem or a larger side limb. This approach preserves the overall structure of the plant while reducing density, which improves light penetration and air movement through the canopy and helps reduce the risk of disease. It’s the opposite of heading back, which shortens a branch by cutting back to a bud or a lateral shoot rather than removing the branch at its base. It’s also different from renewal or rejuvenation pruning, which involves more drastic reduction of size or older wood to stimulate new growth, rather than selectively removing a branch at its origin.