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Field maple in a native hedge: include it in the species mix, or stick with the hawthorn backbone?

Acer campestre, field maple, is the only maple species native to Britain. It grows naturally in hedgerows and woodland edges across southeast England, including in the older boundary hedges around Goodnestone, Chillenden and Knowlton. On the chalky boulder clay here it is well-adapted, tolerant of the alkaline conditions that give some other species trouble, and it provides reliable autumn colour, reasonable insect value and a degree of winter interest that purely thorny species do not. But when someone is planting a new native hedge or restoring a gappy old one in this area, the question of whether to include field maple is a genuine decision, not an obvious one. Field maple whips cost more than hawthorn, they establish more slowly in the first couple of growing seasons, and the extra cost and the slower early growth need to be weighed against what the species actually brings to the hedge. This article gives you that trade-off honestly.

What field maple does in a hedge

Field maple grows as a hedgerow shrub or small tree throughout its native range in England, which extends broadly across the south and east of the country on chalk, limestone and heavier clay soils. Unlike most of its hedgerow companions, it is neither thorny nor toxic, and unlike hazel it does not produce the multi-stemmed coppice growth that makes hazel such a vigorous space-occupier. Under regular clipping in a managed hedge, field maple produces a dense network of twiggy growth that responds well to annual cutting and maintains a tidy, close-knit face. The leaves are five-lobed, similar in outline to a small sycamore leaf but distinctly smaller and on a finer-textured shoot system. In autumn they turn yellow to gold, occasionally orange, with some individual plants showing stronger colour than others.

Field maple is a native woody species that counts towards the species total in Schedule 1 of the Hedgerow Regulations 1997: a countryside hedgerow with at least seven woody species in a 30-metre stretch (or six or five with certain features) can qualify as "important" on wildlife grounds. In practice, around Goodnestone, the older farm boundary hedges along the lanes towards Knowlton and Rowling frequently contain field maple among the hawthorn and blackthorn, and where they do they are often the hedges with the strongest structural integrity. That is not a coincidence: field maple is a long-lived, persistent species in a managed hedge, and one that adds species richness and structural variety without the dominance problems that unchecked hazel can cause.

The insect value of field maple is genuine, if not always appreciated. The flowers, which open in May, are wind-pollinated but also visited by insects seeking pollen. The dense leaf canopy hosts a range of moth caterpillars and aphid species, which in turn support ladybirds, parasitic wasps and the small birds that feed on them. It is not in the same wildlife league as hawthorn (whose berries and blossom are outstanding) or as blackthorn (whose early spring flowers are critical for early bees), but it contributes to the invertebrate base of a hedge in a way that purely structural species like hornbeam do not.

The decision: include field maple in the mix, or leave it out?

Pros of including field maple

• It is genuinely native to this landscape. Field maple is not a hedgerow introduction brought in from somewhere else: it grows naturally on chalk and heavy clay throughout Kent, and its presence in a restored hedge reinforces the ecological authenticity of the planting. On land managed under Countryside Stewardship or Environmental Land Management schemes, a species mix that includes field maple alongside hawthorn, blackthorn, hazel and other natives is more likely to meet the scheme's native species requirements and to score well under biodiversity net gain calculations than a simplified hawthorn-only planting.
• It tolerates the alkaline, chalky soils around Goodnestone without difficulty. On soils above pH 7, which is common across the higher ground between Goodnestone and Chillenden, some species show yellowing or reduced vigour. Field maple does not: it is lime-tolerant and grows strongly on well-drained chalk and on the heavier clay soils in the lower-lying ground between the villages. This makes it one of the safer choices to include in a mixed planting on variable ground where you are not certain of the exact soil conditions along the whole hedge line.
• It counts towards the woody species total under Schedule 1 of the Hedgerow Regulations 1997, so including it adds to the species richness and wildlife value of the hedge.
• The autumn colour is reliable and distinctive. A native hedge that turns yellow-gold in October and November stands out in a landscape otherwise dominated by the reddening hawthorn berries and the brown of senescing grass, and it does so without requiring any maintenance beyond the regular annual cut. For a garden boundary hedge where appearance matters, field maple provides a genuine seasonal visual dividend that purely functional species do not.
• It responds well to annual cutting. Unlike hazel, which can become unbalanced if cut identically to its neighbours year after year without species-specific management, field maple behaves consistently in a mixed hedge under annual mechanical trimming. It builds a dense, well-structured face, it does not throw the vigorous basal regrowth that can overshadow neighbouring species, and it keeps reasonable proportion relative to hawthorn and blackthorn without needing a separate management regime. This simplicity of management is a real practical advantage for a hedge that will be cut by contract each year.
• Bare-root field maple whips are widely available from UK native plant nurseries during the October to March planting season. They are not scarce or specialist: any nursery offering native hedging stock will carry them, and they can be ordered in the mixed-species packs that most native hedge suppliers offer. The availability is reliable and the supply chain is domestic.

Cons of including field maple

• Field maple whips cost more per plant than hawthorn or blackthorn. Bare-root field maple from reputable UK native nurseries typically costs 70 to 100p per whip during the bare-root season, compared with 40 to 60p for hawthorn and a similar figure for blackthorn. At 15 to 20 per cent of a 50-metre two-row planting (approximately 250 plants at 30 cm spacing), including field maple at that proportion adds around 40 to 55 plants of field maple to the order, costing a little more than using hawthorn for the same slots. This is not a large sum in the context of a full hedge planting, but it is a real cost difference, and for a budget-constrained project where every plant matters, hawthorn delivers more bang per pound in the first few years.
• Field maple establishes more slowly than hawthorn in its first two growing seasons. Hawthorn bare-root whips can push 60 to 90 cm of new growth in a good first season on reasonable ground; field maple whips in the same conditions typically achieve 30 to 50 cm in year one, pulling ahead more reliably from year two or three once the root system is established. A mixed hedge that includes field maple will be slightly less uniform in height in years one and two than a pure hawthorn hedge, which matters less on a farm boundary than on a garden screen but is a real consideration for anyone planting for quick visual privacy.
• Field maple is fully deciduous and provides no winter structure of its own. Like hazel, it drops its leaves in October or November and is bare from that point until April. Unlike hazel, it does not produce catkins or persistent berries that provide winter interest or winter food for birds. In a mixed hedge it relies entirely on the hawthorn and blackthorn backbone for whatever winter screening and winter wildlife value the hedge provides. If someone is planting purely for a year-round garden screen, field maple earns its place only in combination with thorny backbone species, not as a substitute for them.
• Field maple self-seeds readily when it is growing in conditions that suit it. On the chalky well-drained ground around Goodnestone, individual plants in a hedge will occasionally produce viable seed, and the winged keys (samaras) can travel some distance on autumn winds. This is not a serious management problem in the way that blackthorn suckering can be, but it is worth noting for ground close to formal lawns or managed plantings where unexpected seedlings would be unwelcome. The volume of self-seeding from a hedge plant is nothing like that of a mature tree, but the potential is there on fertile ground.
• The autumn colour, while generally reliable, is not uniform across all field maple plants. Some individuals colour more strongly than others, and on very dry alkaline soils the leaves can drop before they have fully coloured rather than holding the yellow-gold phase. You can select for stronger colour by inspecting plants in an established hedge in October before choosing your source nursery, but bare-root whips are dormant and leafless when you plant them, so you are buying the species average rather than a proven colour form. The difference is not dramatic, and the average is still good, but it is not the controlled visual effect of, say, a copper beech hedge where the foliage colour is consistent and predictable.

Getting the proportion right

If you decide to include field maple, the question becomes how much of the planting mix it should represent. My view for the landscape around Goodnestone and Chillenden is that 10 to 20 per cent is the right range, with the lower end appropriate where budget is tight or where the hedge is primarily a stock-proof farm boundary that will be maintained by annual machine cutting, and the upper end appropriate where ecological richness and autumn colour are genuine objectives and where the owner will be actively managing the hedge as a habitat feature.

Below 10 per cent, the field maple is present but marginal: with fewer than one plant every 3 to 4 metres in a two-row planting, individual stools are isolated within the hawthorn and blackthorn mass and contribute less to the overall appearance and ecology of the hedge than their cost justifies. Above 25 per cent, field maple begins to set the character of the hedge in a way that reduces the dominance of the thorn backbone, which weakens the stock-proof properties and the winter structure. Between 10 and 20 per cent, one field maple plant in every five to ten along the hedge run, it slots naturally into the mixed-species pattern, contributes its seasonal colour and insect value without disrupting the structural properties of the thorny majority, and adds to the woody species count without overbalancing the planting.

In a standard double-staggered row planting at 30 cm centres, 50 metres of hedge requires approximately 250 plants. At 15 per cent, that is 37 or 38 field maple whips. At 10 per cent, it is 25. At 20 per cent, it is 50. These are all achievable quantities from any native nursery offering standard mixed hedge packs, and the cost premium is modest.

What I recommend for the hedges around here

For a new field-boundary or garden hedge on the Goodnestone, Chillenden or Knowlton side of the parish, I include field maple in most of the hedges I plant, typically at 10 to 15 per cent of the species mix. The soil here suits it: the chalky boulder clay that runs across the higher ground between the villages is exactly the sort of ground on which field maple is native and well-established, and the species performs reliably without any special aftercare once past the first growing season.

My standard native hedge mix for this area is hawthorn as the dominant backbone at 50 to 60 per cent, blackthorn at 15 to 20 per cent, field maple at 10 to 15 per cent, and the remaining 10 to 15 per cent shared between hazel, dog rose and spindle depending on the site. That mix produces a hedge that is stock-proof (hawthorn and blackthorn), wildlife-rich (dog rose hips and blackthorn sloes for birds, hazel nuts, hazel catkins for early bees, field maple insect foliage), and has genuine seasonal visual interest across the year. Field maple is the species I would be most likely to reduce or omit if cost was the binding constraint, but it is also the first species I reinstate when budget allows, because it adds something to the hedge that none of the cheaper species provides.

The case for leaving field maple out entirely is strongest on a purely cost-driven planting, on a garden hedge where year-round visual density matters more than autumn colour and wildlife value, or on a site where the soil is a heavy, waterlogged clay (not typical of the higher ground around Goodnestone, but a reality on some of the lower-lying plots north of the village). In those circumstances, a hawthorn and blackthorn mix with hazel at 10 to 15 per cent gives you a serviceable, well-establishing hedge without field maple's extra cost per plant.

Goodnestone, Chillenden and the local hedgerow context

Field maple is present in a number of the older lane-side hedges around Goodnestone and in the field boundaries south of the village towards the Rowling and Knowlton lanes. In the hedgerow landscape around Goodnestone Park (a Registered Park and Garden of Special Historic Interest, built 1704), field maple appears as a component of the wider hedgerow network that frames the approaches to the Park and the village. Field maple is a native constituent of hedgerows in south-east England, not an introduction.

For any hedge restoration or new planting close to Holy Cross Church (Grade I listed, 12th century), or within the Goodnestone conservation area, it is worth confirming whether the proposed planting site is subject to any conditions attached to permitted development or Section 211 notice requirements. Hedge planting itself does not normally require notice, but associated groundworks close to listed structures can raise questions. Dover District Council is the local planning authority for this area.

The chalky boulder clay on the higher ground between Goodnestone and Chillenden is typically well-drained and alkaline, which suits field maple well. The lower-lying ground north of the village, where the clay is heavier and winter waterlogging more likely, is less ideal for field maple in its first year: the root system of a bare-root whip is vulnerable to sitting in waterlogged ground during the November to February period before it has had a chance to establish. If planting on low-lying ground, either improve the drainage in the planting trench, plant on a slight ridge within the double row, or substitute the field maple slots with hawthorn or hazel, which are more tolerant of wet winter conditions during establishment.

Sources: Woodland Trust, field maple species profile and native hedge guidance (woodlandtrust.org.uk); RHS, field maple cultivation and hedging guidance (rhs.org.uk); Hedgerow Regulations 1997, Schedule 1 (woody species criteria); Wildlife and Countryside Act 1981, section 1; Natural England / Defra, Countryside Stewardship BN11 planting new hedges guidance; Historic England, Register of Parks and Gardens (Goodnestone Park entry).