What to do during January in your garden and greenhouse.
Your monthly gardening checklists
Flowers
- Plant bare-root roses, shrubs, hedging and ornamental trees, as long as the ground isn't frozen
- Take root cuttings of fleshy-rooted perennials such as oriental poppies, acanthus and verbascums
- Establish new colonies of snowdrops and hellebores by buying plants in flower, so you can choose the prettiest blooms
- Clear away soggy, collapsed stems of perennials and compost them
- Take hardwood cuttings from deciduous shrubs, such as forsythia, willow and viburnum
- Remove and bin hellebore foliage marked with black blotches, to limit the spread of leaf spot disease
- Press mistletoe berries into the bark of apple trees to establish your own mistletoe plants
- Check that small alpines don't become smothered by fallen leaves and other wind-blown debris
- Deadhead winter pansies and other bedding regularly, and remove any foliage affected by downy mildew
- Move deciduous shrubs that are in the wrong place to more suitable sites
- Check for rot on stored bulbs and tubers, and ensure dahlia and canna tubers haven't totally dried out
- Continue pruning climbing roses, while they are dormant
Plant snowdrops
Now is the time to buy snowdrops and hellebores
Fruit and veg
- Winter-prune apple and pear trees to remove any dead, damaged, congested and diseased branches
- Sort out your seeds, throwing away empty or out-of-date packets and noting down any to buy for the coming season
- Plan this year's crop rotation to ensure you grow each type of crop in a different bed to previous years
- Prune gooseberries and redcurrants, cutting sideshoots back to three buds from their base
- Clear old crops and weeds from the veg plot, then dig over the soil, mixing in compost as you go
- Regularly inspect stored crops, discarding any showing signs of rot or deterioration
- Plant bare-root fruit trees and bushes into enriched soil, as long as the ground isn't frozen
- Ensure netting is in place over brassicas, such as kale, Brussels sprouts and cabbages, to protect from pigeons
- Cover rhubarb plants with a bucket or terracotta pot to force an early crop of tender long stems
- Feed spring cabbages with high-nitrogen feed to encourage leafy growth
- Prune blackcurrants, if you haven't done so already, removing about a quarter of the old stems
- Order seed potatoes, onions, shallots and garlic bulbs for planting in spring
Prune Apple and Pear trees
Now is the time to prune side shoots from Apple and Pear trees.
Greenhouse
- Sow winter salads in a greenhouse, conservatory or on a sunny windowsill, for harvests within a few weeks
- Tidy up the greenhouse, getting rid of any broken pots, old compost or debris that could hide unwanted visitors
- Move potted strawberry plants under cover to encourage early fruiting
- Check overwintering plants regularly for aphids, mealy bugs and other pests, and take action where necessary
- Bring potted peaches into the greenhouse to avoid leaf curl disease
- Plant hippeastrum (amaryllis) in pots and place on a warm windowsill
- Keep the greenhouse frost-free by installing a thermostatically-controlled electric fan heater
- Bring potted camellias into an unheated porch or greenhouse to encourage early flowering
- Take root cuttings of perennials such as phlox and Japanese anemones, and plant in free-draining compost
- Start sowing seeds of hardy annuals, such as cornflowers, cerinthe and ammi, in modular trays for early flowers
- Prepare your greenhouse for spring by improving the ventilation, shading and heating
- Ventilate the greenhouse on sunny days to prevent humidity building up
House plants
- Give houseplants extra humidity to combat the drying effects of central heating
- Repot moth orchids after flowering if they look like they're about to burst out of their pot
- Water house plants less frequently and move them off particularly cold windowsills at night.Â
- Plant hippeastrum (amaryllis) bulbs in pots for spectacular flowers over the festive season
- Repot any house plants that have become top heavy or pot bound into larger containers
- Move houseplants onto a sunny windowsill over the winter, to get as much light as possible during the shorter days, or choose indoor plants for low light
- Some house plants, like snake plants, are particularly prone to collecting dust on their leaves. So be sure to give these a wipe regularly
- Take leaf cuttings from house plants, including African violets, begonias and Cape primroses
- Take leaf cuttings from succulents, such as echeverias, crassula and sedums
- Check your house plants for pests like aphids, scale insects, thrips and mealybugs
- Put large-leaved house plants into the bath or shower and hose them down to clean off accumulated dust
- Sow cacti seeds into moist, loam-based compost and place in a propagator or on a warm windowsill
- For more house plant advice and inspiration visit our Growing and caring for house plants page.
£4.99
£12.99
Supplied as 5 x tubers
From June to September, these 'Dinner Plate' Dahlias will grace your garden with stunning blooms, ranging from shades of pinks, reds, oranges, to yellows. Dahlias are perfect for planting in your bed, borders, patio pots and containers. They're also great for cutting, so gather a bunch of these lovely pastel blooms to create stunning indoor arrangements.
Ends in:
£10.99
£15.99
Supplied as 3 x 6cm garden-ready biodegradable potted perennial plants
Perennial Lobelia Starship, featuring the vibrant Rose, Blue, and scarlet varieties. These powerhouses are perfect for adding a burst of colour to your garden, with their striking flowers attracting both admiration and pollinators. Ideal for borders or containers, the Starship Collection promises a summer-long display of beauty.
Offer Ends:
£10.99
£15.99
Supplied as 3 x 6cm garden-ready biodegradable potted perennial plants
The Dianthus Dash Collection brings together the exquisite pink, white, and crimson varieties, offering a vibrant palette to enhance your garden. Known for their striking blooms and sweet fragrance, these Dianthus varieties are perfect for creating a captivating display in borders.
Offer Ends:
Garden maintenance
- Top up bird baths with fresh water daily and melt ice with warm water on frosty days
- Repair wobbly or damaged fences, and treat wooden structures with preservative during dry spells
- Give your lawn mower a basic service or take it to a dealer for maintenance, while it's not in use
- Put up bird boxes in sheltered spots, on tree trunks, sheds or walls, well before the nesting season begins
- Clean and sharpen your tools, including hoes, secateurs and shears, and spray metal tools with oilÂ
- Sprinkle an all-purpose fertiliser along the base of hedges and around shrubs
- Trim back ivy, Virginia creeper and other climbers that have outgrown their space, before birds start nesting
- Provide high-energy food for birds to help them through the winter months
- Clear soggy leaves, algae and moss from paths, patios, decking and steps
- Dig over any gaps in borders, removing the roots of perennial weeds
- Give empty pots and seed trays a thorough scrubbing ready for the start of the sowing season
- Remove debris from shed and greenhouse guttering, so winter rain can fill up your water butts
- Scrub and clean out bird feeders regularly to maintain hygiene