How to prune cotoneaster bonsai

Late winter for structural pruning; growing season for shoot pinching. Shorten shoots to 1–2 leaves as they extend. To preserve berries, leave some shoot tips unpruned in early summer as flowers form on current-year growth. Thin congested branch junctions in winter to maintain the characteristic flat, tiered silhouette.

Shoot pinching every 2–3 weeks in the growing season; structural pruning once annually in late winter. Cotoneaster horizontalis is an excellent bonsai subject that buds prolifically on old wood. Prune new shoots to 1–2 leaves throughout the growing season to refine the herringbone branch structure. Heavier structural pruning should be done in late winter before bud break. Berries form on short spurs — avoid over-pinching if berry display is the goal.

Shorten shoots to 1–2 leaves as they extend. To preserve berries, leave some shoot tips unpruned in early summer as flowers form on current-year growth. Thin congested branch junctions in winter to maintain the characteristic flat, tiered silhouette.