Maples are among the most distinctive trees in British woodlands and gardens. Their palmate leaves and winged seeds make them easy to spot once you know what to look for. Three species dominate: field maple (Acer campestre), sycamore (Acer pseudoplatanus) and Norway maple (Acer platanoides). Each has its own character, and telling them apart is a skill every woodland gardener should have. Whether you are planting a native hedge, managing a copse, or simply curious about a tree in your local park, leaf and seed features will give you confident answers.
Start with the leaves. All three maples have opposite leaves, meaning they grow in pairs on the twig. But their lobes and edges tell a different story. Field maple leaves are small, usually 5–10 cm across, with three to five rounded lobes. The edges are smooth, or entire, with no teeth at all. Sycamore leaves are much larger, often 10–20 cm across, with five pointed lobes. The edges are clearly serrated, like a saw. Norway maple leaves sit between the two in size, 10–18 cm, with five to seven pointed lobes. Crucially, the edges are mostly entire, though you may see a few sparse teeth. A handy extra test: break the leaf stalk of Norway maple and you will see a milky white sap. Sycamore and field maple have clear sap.
In late summer and autumn, maples produce pairs of winged seeds called samaras. Each seed has a wing, and the two wings join at the seed case. The angle between those wings is a reliable clue. Hold a pair against the light or lay it flat. Field maple wings form a nearly straight line, around 180 degrees. Sycamore wings are angled at roughly 90 degrees, like a wide V. Norway maple wings are also almost straight, close to 180 degrees, but the seeds are noticeably larger and flatter than field maple. Size matters too: field maple samaras are 2–3 cm long, sycamore 3–5 cm, and Norway maple 4–6 cm. Sycamore seeds are round and plump, while Norway maple seeds are flattened discs.
Field maple is our only native maple, common in hedgerows and ancient woodlands. Its leaves turn a brilliant butter yellow in autumn. The small, rounded lobes and smooth edges are unmistakable once you have seen them. The samaras are small and pair up in a straight line. In the garden, field maple makes a superb hedge or specimen tree for smaller plots. It tolerates clipping well and supports wildlife. Look for it in chalky or clay soils, often alongside hawthorn and hazel.
Sycamore is a familiar sight, often self-seeding in gardens and woodland edges. Its large, five-lobed leaves with serrated edges are easy to recognise. The leaf tips are drawn out into fine points. The samaras hang in pairs at a right angle, and the round seeds are a favourite of birds and small mammals. Sycamore is tolerant of wind and salt, which is why it thrives in coastal and upland areas. It is not native to Britain but has naturalised widely. For woodland gardeners, it provides quick shelter but can be invasive, so manage it with care.
Norway maple is often planted in streets and parks for its reliable autumn colour and neat shape. Its leaves resemble sycamore but are broader, with five to seven pointed lobes and entire edges. The milky sap is a dead giveaway. The samaras are large, with wings that open to almost 180 degrees, and the seeds are flat and disc-like. In a woodland garden, Norway maple can cast deep shade, so place it thoughtfully. It is not native, but its early spring flowers are a useful source of nectar for bees.
Next time you are out among trees, pick up a leaf and a seed pair. Check the lobes, run your finger along the edge, and snap the stalk to look for sap. Then find a samara and measure the angle. With a little practice, you will distinguish field, sycamore and Norway maple in seconds. That knowledge helps you decide what to plant, what to thin, and what to leave for wildlife. Our native field maple, in particular, deserves a place in any British woodland garden. The others have their merits too, provided you keep an eye on their spread. Happy identifying.
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