Photo: Evelyn Simak · CC BY-SA 2.0 ↗

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WildflowersSeen in the wild

Urtica dioica

Common Nettle

Green flower strings and stinging leaves are familiar on rich roadside ground, providing a home for many insects.

See all four seasons Explore fruits, seeds & edibility ↓ Where to look & how to find it ↓

Some plants are poisonous. Do not identify by a photograph alone, and never taste them.

FIELDCRAFT · FIND WITH CARE

Finding guide

Start close to home

Choose the season, find the habitat, then watch patiently. Search guidance is not a measure of rarity or conservation status.

When to go: Usually flowers June–September; new shoots in spring, often dead stems in winter.
Where to start: Less managed corners in Irish towns and countryside. Observe leaf arrangement and flower clusters from a distance.
What to do when you arrive: At less-managed corners, look for paired toothed leaves and dangling small flower clusters. Use zoom to examine hairs; never test identity by touching skin to the plant.

Habitat and behaviour reference: Wildflowers of Ireland ↗ · The practical steps are editorial advice based on the references, not live sightings.

ONE PLANT · FOUR SEASONS

One plant. Four seasons.

Look beyond the flowers: fresh leaves, fruits, bare stems and dormancy.

Meteorological seasons: spring March–May, summer June–August, autumn September–November and winter December–February. Irish weather, cultivar, pruning and plant age affect timing and appearance.

Photos illustrate the relevant feature, not the same plant photographed through a year in Ireland. Features shared across seasons, such as evergreen leaves, may use the same reference. Missing reliable photos are marked; dormancy is not death.

Spring

Mar–May

Foliage and growth

Toothed leaves and upright young stems emerge from rhizomes.

Summer

Jun–Aug

Flowers

Tall stems develop inconspicuous green flower strings in the leaf axils.

Autumn

Sep–Nov

Seeds and spent flowers

Some plants set seed as older leaves yellow and stems begin drying.

Winter

Dec–Feb

Bare branches or dry stems

Often dead stems above surviving rhizomes; mild sites may retain some basal green growth.

Seasonal references: Wildflowers of Ireland ↗ · Photo resized, converted to JPEG and stripped of metadata.

FRUIT · SEED · FOOD SAFETY

Fruits, seeds & edibility

Know the structure, then the part. Recognising a plant does not make it food.

Fruit

Dense clusters of tiny oval achenes form on female inflorescences.

Food use of this part: Food safety not established by this guide

Seeds & dispersal units

Verified close-up not yet available

Refer to the description below until a suitable photo is verified; flowers or other species are not substituted.

What are often called nettle seeds are small fruits with their walls intact; this guide does not list them as food.

Food use of this part: Food safety not established by this guide

Some seed references show intact one-seeded fruits or dispersal units, as identified in their captions. A whole-fruit photo is not a close-up of the enclosed seed. Cones and arils are not true fruits of flowering plants.

Sources & limitations

Wildflowers of Ireland ↗ · Botanical description, not proof of food safety
NC State Extension · Plant Toolbox ↗

No field detoxification methods or safe doses are provided. Never taste a plant to identify it or eat treated or contaminated specimens. Seek professional help after suspected accidental ingestion. National Poisons Information Centre, Ireland ↗

Photo resized, converted to JPEG and stripped of metadata.

BOTANICAL NOTESPlant notes

How to identify it

Opposite coarsely toothed leaves and stinging hairs on stems and foliage; tiny green flowers hang in clusters. Do not touch to test the identification.

Where it grows

Nutrient-rich verges, waste ground, hedges and riverbanks.

Growth and ecology

A rhizomatous perennial and a food plant for several butterfly larvae. Its hairs irritate skin.

Flowering and seasons

Usually flowers June–September; new shoots in spring, often dead stems in winter.

Where to look

Less managed corners in Irish towns and countryside. Observe leaf arrangement and flower clusters from a distance.

Seasons vary with weather and location. Suggested habitats are places to look, not guaranteed sightings. Photos show only some features; check leaves, flowers, fruits and specialist references together.

Further reading:Wildflowers of Ireland ↗

Photo license: Evelyn Simak · CC BY-SA 2.0 ↗ · License terms ↗
Photo resized, converted to JPEG and stripped of metadata.

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