Side by side
Hornbeam or elm? How to tell them apart
Carpinus betulus · Ulmus
How to tell them apart – hornbeam: symmetrical leaf base and a leaf that feels smooth; elm: double-toothed leaf with a markedly lopsided base, round, flat, winged fruits.
How do you recognise them?
- Hornbeam
- Sharply double-toothed leaf, pleated between the veins; grey, ‘muscular’ trunk.
- Compared with elm: symmetrical leaf base and a leaf that feels smooth.
- Elm
- Double-toothed leaf with a markedly lopsided base; round, flat, winged fruits.
| Hornbeam | Elm | |
|---|---|---|
| Leaves | Alternate, oval and pointed, 5–10 cm, sharply double-toothed, with 10–15 pairs of parallel veins between which the leaf is pleated. | Alternate, oval with a pointed tip, double-toothed; one half of the leaf starts clearly lower on the stalk than the other. Often rough to the touch. |
| Flowering | April–May | Small reddish-purple flowers in clusters, as early as February–March, before the leaves (March). |
| Fruit | Nutlets on a three-lobed wing, in hanging clusters. | Round, flat fruits with a papery wing all round the seed. |
| Bark | Grey and smooth, with twisting ridges as if there were muscles underneath. Buds pointed and pressed against the twig. | Grey-brown, furrowed; some species have corky ridges on the twigs. |
| Shape and height | Broadleaf tree, 15–25 m, often as a hedge | Broadleaf tree, 20–35 m |
| Site | Sun to shade, any garden soil, normal | Full sun, any garden soil, normal |
| Native to Belgium | Yes | Yes |
| Good for bees, butterflies and birds | Yes, for butterflies and birds | Yes, for butterflies and birds |
| Poisonous to people and pets | Not known to be poisonous | Not known to be poisonous |
| Pruning months | June–September and November–February | November–February |
What does it mean for your garden?
- Both are native and good for wildlife: choose what suits your soil, your light and the space you have.
- Hornbeam (15–25 m) and elm (20–35 m) both grow into large trees: too big for an ordinary garden, but fine in a large garden, a park or a meadow.
Read on
- Plant profile: Hornbeam
- Plant profile: Elm
- Hornbeam: when and how to prune
- Elm: when and how to prune
- Identification key: the question that separates them
Also looks like
- Beech or hornbeam
- Turkish hazel or hornbeam
- Hornbeam or hop-hornbeam
- Hornbeam or Japanese zelkova
- Hornbeam or grey alder
- Hazel or elm
Identify by feature
This comparison is compiled from the Bladwijzer species pages.