Botanical profile

Pennyroyal

Latin name
Mentha pulegium
Common name
Pennyroyal
Type
Perennial
Family
Lamiaceae

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.

Care guide

Care level
Moderate

Choosing this plant

Main benefit
Powerful aromatic foliage and a compact groundcover habit
Container, edging, aromatic groundcover, herb garden, light damp area
Container growing
Container culture recommended to control its spread
Seasonal care
Grow in containers to limit spread; prune after flowering; handle with care and avoid unsupervised culinary use
Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 4 and above
Exposure
Sun to partial shade
Watering
Regular; keeps the soil cool without waterlogging
Humidity
Average to high humidity; prefers cool soil
Fertilization
Light compost in spring; moderate fertilization in pots
Soil type
Fertile, cool, humus-rich, and well-drained soil
Soil pH
Slightly acidic to neutral
Minimum temperature
-20 °C
Propagation method
Division, cuttings or stolons
Plant appearance

Blooming, foliage and shape

Blooming period
Summer
Flower color
Pale mauve to pink
Foliage color
Green
Foliage type
Obsolete
Shape
Low-growing, creeping, and rhizomatous
Garden structure

Size and growth

Height
4 to 12 inches (10 to 30 cm)
Width
45 to 60 cm (18 to 24 inches)
Growth rate
Rapid growth
Vegetable garden and yield

Companion planting, spacing and harvest

Companion plants
Lemon balm, chives, parsley, calendulas
Spacing
30 to 45 cm (12 to 18 inches)
Harvest period
Leaves: May to September
Not recommended for pets
Not recommended for pets

Pets

Butterflies
Plants that attract butterflies

Butterflies

Repellent
Helps repel certain pests

Repellent

The availability of our plants varies depending on arrivals, seasons, nursery production and supplier availability. Some varieties may be offered for a limited time only, depending on their natural cycle or current stock. These plant profiles are designed to guide and inspire you when choosing plants for the garden, landscaping projects, containers or long-lasting outdoor arrangements.