Cannabaceae

European nettle tree

Celtis australis

European nettle tree

Photo: Unknown — Public domain · source

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Survives zone 6 through 9

Harvest calendar

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

Hackberry — thin, sweet, date-like pulp on a hard seed.

Hardiness
Zone 6–9
Habit
Tree
Edible part
Seed, Fruit
Ripens
Autumn
Mature size
Large tree 20–25 m with a broad spreading crown — not containerable
Light
Full sun to partial
Soil pH
6.0–8.0 (lime-tolerant)
Environment
Mediterranean
Native range
Southern Europe, North Africa and Asia Minor — across the Mediterranean basin east to Iran, on dry slopes, roadsides and in old towns where it is much planted for shade.
Status
Both wild and cultivated
Years to fruit
5–8 yrs
Growth speed
40–60 cm/year — fast when young, and long-lived; venerable specimens are landmarks in Mediterranean towns.
Spacing
1000 cm (394 in) apart — about 100 m² (1076 sq ft) per plant
Leaf shape
Alternate, lanceolate and drawn out to a long point, 5–15 cm long, sharply saw-toothed, rough to the touch above and softly downy beneath.
Root system
Deep-rooting where soil allows, reaching 3–6 m on good ground, though a strong taproot forms only occasionally; on heavy or poorly drained soils the roots run laterally and stay shallow instead.
Fruit description
Round drupes about 6–10 mm across on stalks over 2.5 cm long, ripening from orange through dark purple to almost black; thin sweet flesh, long eaten out of hand around the Mediterranean.
Propagation
Seed is the standard route — clean the pulp off, then cold stratify moist for 60–90 days at about 4°C before spring sowing, or sow outdoors in autumn and let winter do the chilling.
Pollination
Wind-pollinated and polygamo-monoecious — male, female and perfect flowers all borne on the same tree — so a single specimen sets fruit with no partner needed. No insect pollinators are involved.

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.

Growing guide

Fertilizing. Low feeding needs once established — mature trees rarely require fertilizer; a balanced slow-release feed in spring mainly benefits young, newly planted trees.

How it spreads. Self-seeds readily from bird-dispersed fruit and can turn up as an unwanted volunteer in the wider landscape; fallen fruit can also be a litter nuisance near paving.

Growing tips. Prone to witches' broom (a cosmetic fungal twig deformity, not seriously harmful); as the tree matures, prune back large co-dominant branches early to prevent included bark and weak crotches; otherwise notably tolerant of poor soils and urban conditions once established.

Grow journal

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About the data

Zone figures are typical published ranges — microclimate, drainage and siting shift them by a zone in either direction. Store links are found by an automated search, refreshed every six weeks. Availability is seasonal; stock and prices are not tracked.

Venlo — a reference for cold-hardy edible plants