Pennyroyal (Mentha pulegium) in the Mints Database

Common names:
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General Plant Information (Edit)
Plant Habit: Herb/Forb
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Mesic
Leaves: Unusual foliage color
Flowers: Showy
Flower Color: Other: Lavender
Flower Time: Late spring or early summer
Uses: Groundcover
Culinary Herb
Medicinal Herb
Dried Flower
Will Naturalize
Suitable as Annual
Wildlife Attractant: Bees
Toxicity: Leaves are poisonous
Propagation: Seeds: Other info: Some mints can be propagated by seed. Growth from seed can be unreliable for two reasons: mint seeds are highly variable and some varieties are sterile.
Propagation: Other methods: Division
Stolons and runners
Pollinators: Bees
Containers: Suitable in 1 gallon
Suitable in 3 gallon or larger
Needs excellent drainage in pots


Let's Learn About Botanical Names for PlantsLet's Learn About Botanical Names for Plants
September 29, 2011

Genera, species, cultivars, synonyms, common names... what does it all mean? If this subject has you a little confused, allow me to cut through the confusion and show you the light.

(Full article35 comments)
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Photo gallery:
Location: In one of my brother's natural gardens,  BelgiumDate: 2006-07-27
By bonitin
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Location: Middle TennesseeDate: 7/28/2011Pennyroyal has a strong mint fragrance and flavor
By SongofJoy
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By Daniel Feliciano (Own work) [GFDL (
By SongofJoy
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, Kenraiz [GFDL (, CC-BY-SA-
By SongofJoy
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 Photo Courtesy of Baker Creek Heirloom Seeds. Used with permissi
By Joy
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Location: In my garden in Kalama, Wa.Date: 2006-08-08
By Joy
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Posted by gardengus (Indiana Zone 5b) on Sep 19, 2011 1:43 PM

This herb, dried and placed in pet bedding, helps to repel fleas.

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Posted by Mindy03 (Delta KY) on May 11, 2012 5:58 PM

Valuable source of nectar for honey bees.

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Posted by Catmint20906 (Maryland - Zone 7a) on Aug 24, 2014 10:08 AM

Pennyroyal (Mentha pulegium) reportedly attracts several beneficial insects to the garden, including Hoverflies, Mini-wasps, and Tachinid flies. These beneficial insects consume a variety of common garden pests. Pennyroyal also reportedly helps to repel flies, mosquitoes, and fleas.

Despite its usefulness as a companion plant, pennyroyal oil or essence should be avoided due to its high toxicity to both humans and animals. In addition, Pennyroyal should be planted in containers to minimize its aggressive spread in the garden.

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Posted by SongofJoy (Clarksville, TN - Zone 6b) on Sep 14, 2011 1:08 PM

Plant is poisonous if consumed in large quantities but safe as a flavoring.

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