Seasonal Maintenance Guide
- Participate in No Mow May (Plantlife UK's campaign) — do not mow from 1 May to 31 May; record what flowers appear using the Every Flower Counts app to contribute to Plantlife's national survey data
- Remove invasive non-natives as they emerge in April: Himalayan balsam seedlings (identifiable by their distinctive pale green leaves at 50mm height), three-cornered garlic, and Spanish bluebells that have hybridised into bluebell colonies
- Sow wildflower seed in prepared bare soil patches in April–May when soil temperature exceeds 8°C — scratch the soil surface with a steel rake immediately before sowing for best germination contact
- Apply Phasmarhabditis hermaphrodita nematodes for slug control around vulnerable young native seedlings (Primula, Digitalis) — soil temperature must exceed 5°C; apply as directed, using a watering can, from late March
- Plant pot-grown native plants in April and May from specialist nurseries — spring planting requires six weeks of regular watering for establishment; autumn planting (October) requires almost none
- Clean out wildlife pond of blanket weed (Spirogyra) manually in April before populations explode in warm water — remove to compost heap, leaving on the pond edge for 24 hours for pond creatures to return to the water
- Delay main meadow cut until late July (southern England) or mid-August (northern England and Scotland) — wait until at least 75% of wildflower species have set seed; the Plantlife recommendation is to leave the meadow undisturbed until plants have seeded
- Remove all meadow cuttings within 24–48 hours of cutting — leaving cuttings to decompose returns fertility to the soil and destroys the low-nutrient conditions wildflowers need; compost separately or take to a local composting scheme
- Keep wildlife pond topped up during dry spells from June to August — use rainwater from water butts where possible; tap water introduces excess nutrients that encourage algae and reduce biodiversity
- Record wildlife using the iRecord app (endorsed by the UK Biological Records Centre) — contribute to national biodiversity data and track the impact of your garden changes over time
- Take semi-ripe cuttings of native shrubs (Viburnum opulus, Sambucus nigra, Cornus sanguinea) in July–August for autumn planting — root in free-draining compost in a cold frame
- Scatter yellow rattle (Rhinanthus minor) seed directly onto short-cut meadow grass in August immediately after harvest — yellow rattle seed must be sown fresh; viability falls below 50% after six months storage
- Plant bare-root native hedgerow whips from October to February — bare-root stock from Woodland Trust, Hedgerow for Schools, or commercial native hedgerow suppliers costs 70–80% less than container-grown equivalents and establishes better
- Sow native wildflower seed in September on prepared (topsoil-removed or strimmmed) seedbed — autumn sowing provides cold stratification over winter, dramatically improving germination of species requiring vernalisation
- Leave all native seedheads standing through autumn and winter — teasel and knapweed seedheads are critical for goldfinches in October–January; the UK's goldfinch population has doubled partly due to improved garden seed availability
- Build or refresh log pile using freshly cut, untreated native hardwood logs (oak, ash, cherry) — leave uncovered and in contact with the soil; stag beetle larvae require buried rotting wood for their three-year development cycle
- Plant native spring bulbs in October: Hyacinthoides non-scripta (native bluebell) from UK bulb suppliers at 100mm depth in drifts of 20 minimum, Galanthus nivalis at 75mm depth under deciduous trees
- Check for hedgehogs in log piles and compost heaps before disturbing from October — hedgehogs begin hibernation from October; if found, cover and leave undisturbed until April
- Leave all dead stems, seedheads, and leaf litter standing until late February minimum — the Wildlife Trusts estimate that 30% of UK invertebrate species overwinter in standing dead plant material; early cutting destroys these populations
- Prune native hedgerow in January–February during dormancy — the Wildlife Trusts recommend trimming no earlier than 1 February and no later than 31 August (outside the bird nesting season); cut on a three-year rotation rather than annually for maximum berry and nesting value
- Coppice hazel every seven to ten years in January–February — cut to 150mm above ground level; hazel coppice responds vigorously, the removed material provides pea sticks for the kitchen garden, and the resulting increase in light dramatically increases wildflower diversity in the following spring
- Order native seed for spring sowing in January — Emorsgate Seeds, Naturescape, and Landlife Wildflowers all publish catalogues in January; popular regional mixes sell out by March
- Provide supplementary food for garden birds from November to March when natural food is scarce — sunflower hearts (no husk waste), peanuts in caged feeders (prevent large bird waste), and fat balls support wintering species including long-tailed tit, siskin, and visiting redwing
- Survey and record plants and wildlife present in January — the British Trust for Ornithology's Garden Birdwatch and the RSPB's Big Garden Birdwatch (late January) are the UK's most important citizen science programmes for measuring garden biodiversity












