Carpinus

  • Common name: Hornbeam
  • Genus: Carpinus
  • Family: Betulaceae
  • Species: Carpinus orientalis
  • Skill level: Beginner to advanced
  • Foliage: Alternate serrated leaves turn bright orange/yellow in autumn. Leaf size becomes smaller following dense ramification.
  • Bark: Pale grey.
  • Flower and fruit:
    Wind-pollinated flowers produce pendulous catkins in spring. The male and female flowers are on separate catkins, but on the same tree. The fruit is a small nut about 3–6 mm long.
  • Soil type: Medium rich, but well draining, with 30-40% fine gravel added to the mix
Husbandry

Propagating

Through cuttings or seed.

Air layering

Apply layers in early spring. It is sometimes best to wait two years before detaching the layer in order to gain strong rooting.

Placement

The hornbeam is frost hardy (zones 4 - 9), but protect against cold winds. Full sun is fine, though in hot summer months leaves may well scorch. Its new foliage is sensitive to strong sun and wind.

Watering

Don't let it dry out during the growing season. In winter keep it moist but do be careful not to have the roots too wet.

Pruning

Let it grow to five to six new leaves before pinching out the growing tips. Weaker areas should be left to grow even further. As soon as the leaves are hardened off, you can prune the strong areas such as the apex and external branches. Prune back to two leaves.

Repotting

Repot young trees every two to three years. Older trees three to four years, but as an indication check if roots pop out underneath the drainage holes and whether the soil still takes up the water. A well-draining soil type with small particles helps to develop a finer root system.

Wiring

Young shoots can be wired loosely Guy wires with protective rubber bands is effective for older branches. Always use aluminium wire.

Styles

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