Early Winter Flower Garden Jobs: Digging, Construction, and Greenhouse Prep

Digging: Continue and Prepare

Carry on with general digging described in late autumn while weather permits. This includes preparing beds for herbaceous perennials, borders, sweet pea trenches, and sites for spring-sown hardy annuals and half-hardy annuals to be planted out late next spring. Basic digging for a spring-sown lawn can also be done now, leaving the surface rough over winter — frost may kill some surface weed seeds.

If you haven't already, choose and prepare a nursery bed site now. Place it near the greenhouse to minimize hauling, sheltered from north and east winds, with both sun and shade. The soil must be excellent — well-drained, fertile — since it's for seeds and young plants before permanent placement. It's also a great cutting garden, sparing your borders.

Cold frames on the nursery bed serve many uses: hardening off, sheltering exotics, holding cuttings or seedlings, or direct planting. If used for direct planting, ensure good base drainage — dig 1–2 spits deep, add 5–7.5 cm (2–3 in) of drainage material, then fibrous peat. If subsoil is heavy, replace only with topsoil and raise the level with compost mix as needed.

Construction: Rock Gardens

Small gardens prove tiny can be beautiful — a modest rock garden offers immense pleasure and a vast plant palette for season-long color. Spring is the classic peak, but summer and autumn displays are equally achievable with many small perennials adapting well to a miniature alpine landscape.

Drainage is non-negotiable. Whether working a natural slope or building a mound, ensure subsoil drains well, mixing in coarse grit if heavy. For sticky clay, dig out a spit deep, add drainage material, and backfill with gritty topsoil. Aim for at least 60 cm (2 ft) depth of a mix: 3 parts loam, 2 parts peat or leaf-mould, 1 part grit (by volume).

Build from the bottom up: base rocks, soil, planting, then next layer. Arrange rocks to look natural — strata running the same way, each piece sloping back slightly for stability and drainage. Create crevices, gullies, plateaus, and peaks for sun- and shade-loving plants. The finished garden should appear as a natural hump or bank with bedrock protruding through centuries of erosion.

Sandstone (acidic) and limestone (alkaline) are the two main rock choices. Your soil pH and desired plants dictate the choice — some alpines hate lime. Test your soil and browse an alpine catalogue to avoid costly mistakes.

Turfing and Mowing

Lawns can be turfed in early winter if conditions allow, just as in late autumn.

Winter mowing is possible under the right conditions: grass grows slowly but gets shaggy. Top it to 4–5 cm (1½ in) on a mild, sunny, non-frosty day when the ground is firm. Wet grass tears; wet soil gouges. Top autumn-seeded lawns if they haven't been cut yet.

Bringing Bulbs Into Light and Warmth

Bulbs for Christmas and mid-winter flowering should come into light as soon as possible. Christmas cactus enters warmth now — greenhouse or home — to trigger rapid bud development. For Christmas Day bloom (Northern Hemisphere), bring plants in during the second week of early winter.

Breaking Ice, Clearing, and Cutting Back

If a fish pond freezes solid, gently break a small hole for oxygen exchange — non-tropical fish survive cold if oxygen is available.

Rake remaining leaves off grass, beds, paths, and overwintering annuals/biennials. Fork over established herbaceous borders and work in bonemeal at 90 g/m² (3 oz/yd²) if not done in late autumn. Brush seedling lawns gently.

Continue cutting down late-flowering chrysanthemums as blooms finish. Place pots under greenhouse staging temporarily until new shoots appear. Keep compost moist.

Greenhouse and Frame Management

Be ready for sharp nighttime temperature drops — boost heat as needed. Cover frames with sacking on bitter nights. On sunny, calm days, reduce heat, open ventilators, and admit fresh air. Wipe condensation, water moderately. Keep structures free of dead material, rotting leaves, and spent flowers. Add final support strings for corm-grown freesias nearing bloom. Primula malacoides and possibly P. obconica will flower in mid-winter — their buds are showing and they may need slightly more water.

Increasing: Chrysanthemum Cuttings

Cuttings from late-autumn chrysanthemums may be ready by late early winter, though mid-winter is more likely. Use shoots produced from below soil level after cutting back — not stems or shoots from flowering plants.

Overhauling Tools and Machinery

Winter is the time to clean, sharpen, and repair tools. Delay until spring means long waits at repair shops — risking a ruined lawn and failed crops. Oil hand tools, sharpen spades, billhooks, shears — all cutting edges. Straighten teeth, tighten handles, screws, nuts, bolts. Wheelbarrows take a beating: oil wheels, patch bodies, pad handles.

Pest and Disease Treatment

Slugs target Christmas roses — deter with 15 cm (6 in) bands of coarse grit or slug bait. Greenfly, whitefly, and red spider mite may persist in the greenhouse; remove by hand or use insecticide.