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The Verdant HoursHerbal gathering almanac
Plant atlasBetulaceae
Culinary reference

Common hazel.

Corylus avellana

Also found as Common hazel · Cobnut

A multi-stemmed hedgerow shrub with soft, round toothed leaves, yellow catkins in winter and edible nuts in autumn.

Sources checked 27 September 2026 · Specialist field review pending
Common hazel: Toothed leaves.
Stephen James McWilliam · CC0 1.0
Before any gathering or use

Tree nut allergy is common and can be severe.

Where it grows

Tracked records and known growing zone

Explore on the field map
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Squares: where people recorded it, brighter where more people did
Verified records
53,992
People who recorded it
16,712
Most records (northern hemisphere)
Apr–Aug
Records span
1940–2026
Northern hemisphere · 53,970 dated records
Common hazel verified records by month, northern hemisphere
January2300
February4029
March3727
April7254
May7413
June6217
July7382
August5703
September3742
October3165
November1955
December1083

Research-grade iNaturalist records, snapshot Aug 27, 2026. The growing zone combines areas where different people have repeatedly verified it. Records show where people looked and found it, not current abundance or permission to gather.

01 / Learn to see

Field marks

  1. 01

    Round, softly hairy leaves with double-toothed edges and a pointed tip.

  2. 02

    Yellow lamb's-tail catkins in late winter.

  3. 03

    Nuts in leafy husks, ripening brown in autumn.

These are study prompts, not a complete identification key. Confirm the full plant with a regional flora and an experienced local identifier.

02 / Resolve the differences

Look closely. Compare.

Selected comparisons only. Other lookalikes may occur locally.

03 / Meet the place

Habitat & season

Range context

Native to Europe and western Asia.

Watch the plant stage

Catkins in late winter; nuts in early autumn.

Stage guidance is not a local forecast. Check your climate, elevation and a regional source; no month-shift formula is used here.

04 / Gather with care

Documented use & care

Parts discussed: Nut

Eat ripe nuts raw or roasted.

Care for the patch

Squirrels and dormice depend on hazelnuts; take a share.

Preparation & storage essentials

05 / Follow the evidence

Sources & review

Checked 27 September 2026. Original editorial synthesis; source institutions have not reviewed or endorsed this guide. Independent botanical field review is pending. Photos illustrate specimens; they do not certify the identity of a plant you find.

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