European beech

Photo: GooseCanada — CC BY-SA 4.0 · source

Survives zone 4 through 7

Harvest calendar

Best planted in early spring after your last frost, or in fall before the ground freezes, depending on your climate.

Triangular beechnuts edible, sweet and nutty — best lightly roasted; F. sylvatica is higher in fagin than the American species. ⚠ Raw beechnuts contain fagin and oxalic acid — eat only in moderation or roast; a longer roast gives a coffee substitute.

Hardiness

Zone 4–7

Habit

Tree

Edible part

Nut

Ripens

Sept–Oct

Mature size

Large tree 25–40 m — not containerable

Light

Very shade-tolerant as a tree — but MAST (nuts) needs a dominant, sunlit crown

Soil pH

Castanea 4.5–6.5 — ⚠ LIME-INTOLERANT (calcifuge, unlike other nut trees). Quercus/Fagus 5.0–6.5

Environment

Temperate woodland

Native range

Europe — southern Scandinavia and Britain south to Spain, Italy and Greece, east to Poland and Ukraine; the dominant tree of much European lowland and hill forest on well-drained soils.

Status

Both wild and cultivated

Years to fruit

3–5 yrs grafted

Growth speed

30–50 cm/year — slow to medium, and very long-lived.

Spacing

1200 cm (472 in) apart — about 144 m² (1550 sq ft) per plant

Leaf shape

Alternate, oval, 5–10 cm long with a wavy (not toothed) margin and 5–9 pairs of parallel veins, silky-haired on the edges as they open; young trees and clipped hedges hold dead copper leaves through winter.

Root system

⚠ Notoriously shallow and wide-spreading, with a dense surface mat of roots and heavy shade above it — very little will grow beneath a mature beech, and the roots lift paving readily. No significant taproot once past the seedling stage.

Fruit description

Small triangular nuts 1–1.8 cm long, borne in pairs inside a four-lobed bristly husk that splits in autumn; sweet and oily when roasted. ⚠ Raw beechnuts contain fagin and oxalic acid, plus saponins, and cause stomach upset and symptoms of poisoning if eaten in quantity raw. Roasting breaks these down — properly roasted nuts are fine, and the flavour improves — but keep raw nibbling to a very few nuts.

Propagation

Seed (beechnuts) must be sown fresh in autumn or given about three months cold stratification; viability drops fast if the nuts dry out, and mast years are irregular. Named forms are grafted.

Pollination

Wind-pollinated, monoecious; masting every ~3–4 years

The edible parts listed above are a starting point, not a field guide. Identify a plant with certainty — ideally against a local authority — before eating any part of it, and read the full disclaimer. Spotted something wrong? Report it.