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The Verdant HoursHerbal gathering almanac
Plant atlasLamiaceae
Toxic · do not eat

Pennyroyal.

Mentha pulegium

Also found as Flea mint · Churchwort

An aromatic mint that is harmful if eaten; mint fragrance is not an edibility guarantee.

Sources checked 9 September 2026 · Specialist field review pending
Pennyroyal: Reference specimen (Mentha pulegium)
zebedeugalinha · CC BY
Toxic. Keep out of food and tea.

The RHS explicitly identifies pennyroyal as non-edible and harmful if eaten.

Poison help

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
7,160
People who recorded it
4,010
Most records (northern hemisphere)
Jul–Sep
Records span
1985–2026
Northern hemisphere · 6,486 dated records
Pennyroyal verified records by month, northern hemisphere
January24
February25
March52
April155
May244
June845
July2151
August1560
September936
October345
November113
December36
Southern hemisphere · 674 dated records
Pennyroyal verified records by month, southern hemisphere
January203
February170
March112
April57
May17
June2
July1
August3
September3
October13
November16
December77

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

    Creeping and upright stems with opposite leaves.

  2. 02

    Small lilac flowers in whorls.

  3. 03

    Strong mint fragrance shared with edible and non-edible relatives.

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

Europe to Iran and Ethiopia in the RHS account; cultivated and introduced elsewhere.

Watch the plant stage

Treat every stage as unsuitable for food gathering.

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

Observe. Leave intact.

Do not make tea, ingest essential oil or use as a home remedy.

Care for the patch

Do not include in a culinary mint bed without clear identification and labeling.

Preparation & storage essentials

05 / Follow the evidence

Sources & review

Checked 9 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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