← All guides · Aftercare · Updated September 2026

Hedge aftercare and feeding: a month-by-month calendar for Medway gardens.

A hedge that gets cut but never fed or mulched will eventually go bare at the base and slow down well before it needs to. Here is what actually makes the difference, and when to do it, across the ME1 to ME8 patch.

1. February: first feed of the year

   Late February is the right moment for the annual main fertiliser application on an established hedge. A balanced, slow-release granular fertiliser, a general-purpose product or a dedicated hedging feed, scattered at the base and watered in. Doing it in February means the nutrients are available in the soil just as root activity picks up with the longer days.

   Avoid high-nitrogen feeds at this stage. They push rapid soft growth that is more vulnerable to a late frost. A balanced N-P-K is the safer call. On heavier clay, applying the granules on a day when rain is forecast saves a separate watering-in job.

2. March to April: mulching and pest checks

   Once the feed is in, a 5 to 8cm layer of organic mulch laid around the base of the hedge, bark chip, well-rotted garden compost or leafmould, conserves moisture, suppresses annual weeds and gradually improves soil structure, especially on heavy clay. Keep the mulch a few centimetres clear of the stems themselves to avoid encouraging rot at the collar.

   This is also the time to check the base of the hedge for slug and vine weevil damage on any recently planted or younger hedging, particularly in shaded, north-facing gardens where the ground stays damp well into spring. Rabbit guards on bare-root plants still in their first or second season should stay on until the stems have hardened off sufficiently. If you have box hedging, set a pheromone trap now for box tree moth: our month-by-month pest and disease calendar covers the full season of checks and treatments.

   Under the Wildlife and Countryside Act 1981, section 1, bird nests are protected while in use or being built. The Act sets no calendar dates; RSPB and GOV.UK guidance treats 1 March to 31 August as the main nesting season. It is a criminal offence to intentionally damage or destroy such a nest, with a fine, up to six months in prison, or both, counted per nest; not having looked is no safeguard. Ground-level mulching and feeding continue through the nesting window, but hedge-cutting work that could disturb or expose a nest waits until September. If a nest is found while mulching or weeding, leave it undisturbed.

3. May to June: watering and the first flush of growth

   Newly planted hedges in their first and second seasons need consistent watering through May and June, particularly during dry spells. Exposed, windy gardens lose surface moisture faster than sheltered ones. A daily check on the soil surface during dry weather is not excessive for a hedge in its first summer.

   Established hedges generally look after themselves through May and June on their own root system. If you run a box hedge, Derby Day (the first Saturday in June) is the traditional first cut once the new growth has hardened. See the season-by-season cutting calendar for the species-by-species trim timing across the year.

   If a second, lighter top-up feed feels warranted on a hedge that has put on particularly vigorous growth, a liquid seaweed or balanced feed in late May is fine. Avoid a high-nitrogen boost this late in the window: it pushes soft growth straight into the period when cutting is restricted under the nesting season rules.

4. July to August: drought stress and wind scorch

   July and August are the peak drought-stress window for hedges on lighter, free-draining ground. Chalky or sandy ground drains faster than heavy clay, and an unwatered young hedge on a drier plot can show stress quickly. Soils in the Medway area range from free-draining chalk on higher ground to heavier clay in the lower parts, so check your own plot. If the soil is pulling away from the base of the hedge stems, water thoroughly and consider a temporary hessian windbreak on exposed plots.

   In an exposed garden near the water, salt-laden summer wind can scorch the windward face of conifers and evergreens. This browning is wind scorch, not disease. Leave it. The next growing season will recover the interior growth, and cutting into drought-stressed wood just opens more wounds at the worst time of year.

   The main nesting season (Wildlife and Countryside Act 1981, section 1; RSPB and GOV.UK guidance runs to 31 August) continues. Major cutting work waits.

5. September: the season opens and an optional final feed

   The 31 August guidance date is not a legal cut-off, so we do a visual nest check before any September cut, especially on hedges that held nesting activity. The main season is open. This is the right window for the annual species-appropriate trim on yew, beech, hornbeam and native mixed hedges. See the cutting calendar for exact timing by species.

   After the trim, an optional light balanced or low-nitrogen liquid feed in early September can help a hedge go into dormancy in good condition. By mid-September, stop feeding altogether. Applying nitrogen too late in the autumn pushes growth that will be caught by the first frosts. First frosts usually arrive in late autumn, so the window for late feeding is genuinely short.

6. October to November: mulch top-up and no nitrogen

   October is a good time for the autumn tidy-up. After the final cut of the season, top up the mulch layer around the base of the hedge. If the bark chip has decomposed down over the summer, a fresh 5cm layer before the winter cold insulates the roots during hard frosts and continues suppressing weeds through the dormant period.

   No nitrogen feed from October onwards on any species. A late nitrogen application on privet or leylandii pushes soft new growth that will be killed by the first frost and can leave the plant weaker going into spring than if you had left it alone. If the hedge looks pale or lacking vigour in October, note it down and address it in February with a proper balanced feed, not a quick fix in November.

7. November to January: dormancy, structural review and planting

   Deciduous hedges are bare, evergreens have stopped active growth. This is the window to stand back and look at the overall structure honestly. If a leylandii, laurel or privet has grown well above the height you want, December to February is the window for a hard structural cut or the start of a staged two-year reduction before root activity resumes in spring. The plant can be seen clearly and the growing season ahead will recover wounds cleanly.

   This is also the bare-root planting window, the lowest-cost and fastest-establishing way to add a new hedge to the plot. See the guide on when to plant a new hedge in Medway for the bare-root versus container comparison and the realistic timeline to a working screen.

   On waterlogged ground, common on heavy clay after a wet autumn and into December, avoid major ground disturbance at the base of an established hedge. Root damage on saturated clay is slow to heal and a wet winter is not the time to expose the root zone unnecessarily. If a storm earlier in the year caused damage, use this dormancy window to assess what needs cutting out and plan the structural repair for late January to February. Our storm and wind damage recovery guide covers the full timeline from assessment to shaped cut.

Hedges Direct, the UK hedging nursery, covers the basics of hedge care in their YouTube video How To Care For Hedges. Their guidance is a useful general-purpose starting reference; the timing and soil notes above adapt it for the Medway area's mix of heavy clay, free-draining chalky ground and exposed, windy plots.

Sources: Wildlife and Countryside Act 1981, section 1 (nesting offence and penalty); Royal Horticultural Society hedging and fertilising guidance; Hedges Direct, "How To Care For Hedges" (YouTube, Hedges Direct channel, UK).