Botanical profile

Marshmallow

Latin name
Marsh Mallow
Common name
Marshmallow
Type
Herbaceous medicinal perennial
Family
Malvaceae

Marshmallow is a medicinal perennial plant with a soft and natural charm, appreciated for its slightly downy gray-green foliage and pale flowers, often rosy white to soft pink. Its upright and elegant habit brings height, texture, and a rustic touch to medicinal plant gardens, perennial beds, naturalized vegetable gardens, and pollinator-friendly landscapes. It fits very well into wild-inspired gardens, where its velvety foliage creates a beautiful contrast with darker or more colorful plants.

Easy to cultivate, marshmallow prefers a sunny to slightly semi-shady location, in rich, cool, deep, and well-drained soil. It appreciates soils that retain some moisture, especially during hot periods, and can become a beautiful structural plant once established. Its maintenance is simple: regular watering at the beginning, good establishment, and pruning of dry stems at the end of the season are usually sufficient to maintain a vigorous and decorative plant.

Traditionally recognized as a medicinal plant, marshmallow is also cultivated for its ornamental interest, its botanical history, and its delicate flowering. Its flowers attract bees and other pollinators, helping to make the garden more vibrant and biodiverse. It is an ideal perennial for adding a useful, hardy, and elegant plant to a medicinal garden, a natural border, or an edible landscape with a rustic style.

Care guide

Care level
Easy

Choosing this plant

Main benefit
Tall perennial medicinal plant with pale pink flowers and soft foliage
Medicinal garden, natural bed, pollinator garden, wet border, edible plant
Container growing
Container growing is only possible in a large, deep pot
Seasonal care
Cut back dry stems in fall or spring; water during dry spells; divide clumps as needed
Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 3
Exposure
Sun to partial shade
Watering
Regular; keep the soil cool without waterlogging
Humidity
Average to high humidity; prefers cool soil
Fertilization
Compost in spring; light fertilization in poor soil
Soil type
Fertile, deep, fresh to moist, and well-drained soil
Soil pH
Slightly acidic to neutral
Minimum temperature
-30°C
Propagation method
Sowing, division or root cuttings
Plant appearance

Blooming, foliage and shape

Blooming period
Summer
Flower color
Pale pink to pinkish white
Fruiting
Seeds at the end of the season
Foliage color
Grayish green
Foliage type
Obsolete
Shape
Upright, flexible, and bushy habit
Garden structure

Size and growth

Height
90 to 150 cm (36 to 60 inches)
Width
60 to 90 cm (24 to 36 inches)
Growth rate
Average growth
Vegetable garden and yield

Companion planting, spacing and harvest

Companion plants
Bee balm, coneflowers, mallows, mint
Spacing
45 to 60 cm (18 to 24 inches)
Harvest period
Roots in the autumn; leaves and flowers in the summer
Not recommended for pets
Not recommended for pets

Pets

Butterflies
Plants that attract butterflies

Butterflies

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.