Prune Acer and Betula before mid-December to avoid bleeding from cuts.
Purchase seed potatoes at the end of this month. It may seem early but tubers will store well in a cool, frost free-free place and can be ready for chitting from January.
For early tender stems; force rhubarb by covering crowns with a forcer or dark coloured bucket, cover crowns with a layer of straw.
Winter digging can start now (until February).
Garlic can still be planted 1″ deep in well drained soil or in pots.
Check to see grease bands or barrier glues are still sticky and protecting fruit trees from winter moth.
Keep flowering Azaleas, Cyclamen and Hyacinths in cool conditions 50-59°F to prolong flowering.
Prune apple and pear trees, currants and gooseberries.
Move plants such as Phalaenopsis (Moth Orchids) to an east or west facing window sill to maximise light.
Prune grapevines by mid-December to avoid sap bleeding.