Mulberry in November: monthly care

Black mulberry (Morus nigra) thrives in full sun and needs a sheltered spot with plenty of space—mature trees can reach 4–8 metres tall and equally wide. Choose a permanent location carefully; mulberries dislike root disturbance and are slow to establish if moved. The ideal soil is well-drained loam or sandy soil with good fertility, though mulberries tolerate a range of conditions provided drainage is adequate. Avoid heavy clay that stays waterlogged in winter. Plant bare-root trees in October, November, or March when the soil is workable and not frozen. Container-grown specimens can go in during the same months for best results. Dig a planting hole twice the width of the root ball but no deeper—the root flare should sit level with the surrounding soil. Break up compacted soil at the base of the hole and mix in a bucketful of well-rotted compost or manure to improve structure and fertility. Position the tree so the graft union (if present) is above soil level. Backfill with the excavated soil, firming gently with your heel to eliminate air pockets. Water thoroughly after planting, applying at least 20 litres to settle the roots. Apply a 7–10 cm layer of organic mulch (bark chips or well-rotted compost) around the base, keeping it clear of the trunk to prevent rot. Space trees at least 5 metres apart and away from paths or patios—ripe mulberries stain badly when they drop. Stake young trees with a short, angled stake and a flexible tie for the first two years until the root system anchors properly.

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.