VEGETABLE PATCH : The ascending Waxing Gibbous moon draws sap upward with real momentum — leaf crops are at their most receptive right now. Under cover, sow a fresh tray of cut-and-come-again spinach (Spinacia oleracea ‘Medania’), corn salad (Valerianella locusta) and land cress (Barbarea verna) in a shallow seed tray filled with fine compost, pressing seeds to 1 cm depth and spacing rows 8 cm apart / Harvest outer leaves of established winter lettuce (Lactuca sativa ‘Winter Density’, ‘Arctic King’) and pak choi (Brassica rapa subsp. chinensis) by cutting cleanly with scissors 2 cm above the collar — this encourages regrowth rather than exhausting the plant / Thin overcrowded rows of overwintering chard (Beta vulgaris subsp. cicla) to 15 cm between plants; the thinnings make excellent additions to winter soups / In milder coastal gardens, check kale (Brassica oleracea ‘Nero di Toscana’, ‘Red Russian’) for aphid colonies sheltering in the leaf axils — a firm spray of water dislodges them without chemicals, which matters when harvesting is ongoing
INDOORS : A good morning to attend to the leafy houseplants that often get overlooked in December. Wipe down the broad leaves of Swiss cheese plant (Monstera deliciosa), rubber plant (Ficus elastica) and peace lily (Spathiphyllum wallisii) with a damp cloth — dust accumulation on leaf surfaces reduces photosynthesis by up to 30%, and clean foliage simply looks more alive in low winter light / Water sparingly: most indoor foliage plants need no more than 200–300 ml every 10 days at this season; check by pushing a finger 3 cm into the compost before watering / Pot on any rootbound asparagus fern (Asparagus setaceus) or spider plant (Chlorophytum comosum) into a container one size larger, using a peat-free multipurpose compost mixed with 20% perlite for drainage / Group humidity-loving plants such as maidenhair fern (Adiantum capillus-veneris) and nerve plant (Fittonia albivenis) together on a tray of damp gravel to raise local humidity without overwatering
ORCHARD : Winter pruning of deciduous fruit trees progresses well under an ascending moon — the rising sap helps wounds callus cleanly. Work through apple (Malus domestica) and pear (Pyrus communis) trees today, removing crossing, rubbing or inward-facing branches with a sharp pruning saw, cutting flush to the collar without leaving stubs / On young plum (Prunus domestica) and damson trees, limit pruning to dead or diseased wood only — stone fruit is best pruned in summer to reduce silver leaf risk, but urgent structural cuts in dry, frost-free conditions are acceptable / Inspect stored quince (Cydonia oblonga) and late apple varieties for soft spots; remove any showing rot immediately to prevent spread to neighbouring fruit / Apply a thick band of grease barrier around the trunks of apple and cherry trees, renewing any that has dried out — winter moth females climbing the bark to lay eggs will be stopped in their tracks