How to prune sweet chestnut 'marigoule'

Late winter to early spring while dormant, or mid-summer if chestnut blight is a concern in your region. In the first 3–5 years, select 3–5 evenly spaced scaffold branches and remove competing leaders. On mature trees, use thinning cuts (not heading cuts) to remove congested growth. Always cut just outside the branch collar and seal large wounds in blight-prone areas.

Formative pruning annually for 3–5 years; then as needed (every 3–5 years). Sweet Chestnut 'Marigoule' is an early-cropping hybrid cultivar that benefits from formative pruning when young to establish a strong framework. Mature trees need little pruning — remove dead, diseased, or crossing branches and maintain good canopy light penetration. Avoid heavy cutting; chestnuts compartmentalise wounds slowly.

In the first 3–5 years, select 3–5 evenly spaced scaffold branches and remove competing leaders. On mature trees, use thinning cuts (not heading cuts) to remove congested growth. Always cut just outside the branch collar and seal large wounds in blight-prone areas.