Fine Herbs

Pennyroyal

Pennyroyal is a creeping aromatic perennial with highly fragrant foliage and small mauve flowers, used primarily as an ornamental plant and aromatic groundcover.
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Exposure
Sun to partial shade
Hardiness
Zone 4 and above

Discover the plant

Common namePennyroyal
FamilyLamiaceae
TypePerennial
Botanical namePennyroyal

Pennyroyal is a perennial aromatic plant with a low, spreading habit, valued for its highly fragrant foliage and intense minty scent. It forms a dense, natural groundcover that can be used in herb gardens, borders, cool areas, and naturalized landscapes. Its mauve to lilac flowers attract pollinators and add a delicate touch to spaces where a robust, decorative, and distinct aromatic plant is desired, differing from classic mints.

Easy to grow, pennyroyal prefers a location with soft sun or partial shade, in fresh to moist, fertile, and well-drained soil. It appreciates regular watering and can adapt well to more humid garden areas, making it a good option near cool zones or flowerbed borders. Like many mints, it can spread quickly when it thrives, so it is recommended to grow it in pots or in a delimited space to better control its growth.

Traditionally recognized as an aromatic and medicinal plant, pennyroyal should nevertheless be used with great caution, as it is not recommended for regular consumption and can be toxic in certain forms or at high doses. It is therefore mainly of interest as an ornamental, fragrant, and melliferous plant in the garden. It is an original mint for gardeners looking for an aromatic groundcover that is easy to grow and useful for adding fragrance, texture, and biodiversity to outdoor spaces.

Pennyroyal

Planting guide

From planting to establishment.

Propagation Division, cuttings or stolons

Soil and care

The right care,at the right time.

Soil pH

Slightly acidic to neutral

Minimum temperature

-4 °F

Care level

Moderate

Watering

Regular; keeps the soil cool without waterlogging

Soil type

Fertile, cool, humus-rich, and well-drained soil

Fertilization

Light compost in spring; moderate fertilization in pots

Moisture

Average to high humidity; prefers cool soil

Seasonal care

Grow in containers to limit spread; prune after flowering; handle with care and avoid unsupervised culinary use

Container growing

A garden,within reach.

Container culture recommended to control its spread
Pennyroyal

Bloom and dimensions

Its place,in your garden.

Mature height

4 to 12 inches (10 to 30 cm)

Width / spread

45 to 60 cm (18 to 24 inches)

Flower color

Pale mauve to pink

Foliage color

Green

Foliage type

Obsolete

Growth rate

Rapid growth

Bloom period

Summer

Harvest

Leaves: May to September
Pennyroyal

Garden associations

In goodcompany.

Companion plants

Lemon balm, chives, parsley, calendulas

Wildlife and pets

Life,around your plants.

Supporting wildlife

Bees, butterflies