Mulberry in December: monthly care

Black mulberry requires minimal pruning and resents heavy cutting, which can lead to dieback or excessive bleeding of sap. The best time to prune is in late autumn or early winter—November or December—when the tree is fully dormant and sap flow is at its lowest. Avoid pruning in late winter or spring, as mulberries bleed profusely from fresh cuts, weakening the tree and inviting disease. For the first few years, focus on establishing a balanced framework. Remove any crossing, rubbing, or inward-growing branches to create an open centre that allows light and air circulation. Cut back to a main branch or the trunk rather than leaving stubs. Use clean, sharp secateurs for stems up to 2 cm diameter and a pruning saw for anything thicker. Once mature, mulberries need very little intervention. Remove any dead, damaged, or diseased wood as you spot it, cutting back to healthy tissue. If branches become congested in the crown, thin out a few of the weakest or most awkwardly placed stems, but never remove more than a quarter of the canopy in one season. Mulberries fruit on short spurs on older wood, so avoid cutting back healthy fruiting branches. Old, neglected trees can be lightly renovated over two or three years, removing no more than one or two large limbs per winter. Always seal large cuts (over 5 cm diameter) with pruning paint to reduce moisture loss and infection risk. If the tree is growing well and fruiting reliably, the best approach is simply to leave it alone.