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Guimauve officinale en fleurs, plante vivace aux fleurs rose pâle.

Useful perennial flower Malvaceae

Edible and medicinal perennials

Marshmallow – Seeds

Name: Marshmallow (Althaea officinalis) – Seeds
Brand: Akène
SKU: AKE-SEMENCES
Price: 4.99 CAD
Availability: OutOfStock

Althaea officinalis

Product code :

Tall perennial with pale pink flowers and velvety foliage. Marshmallow attracts pollinators and suits useful, naturalistic, and edible gardens with deep, rich, consistently moist soil.

Quantity: About 70 seeds
Exposure: Full sun
Life cycle: Perennial
Hardiness: Zones 3 to 8

Common nameMarshmallow

FamilyMalvaceae

GenusAlthaea

Speciesofficinalis

Cultivar

TypeUseful perennial flower

Botanical nameAlthaea officinalis

Reproducible seedsYes

Marshmallow (Althaea officinalis) is a tall, elegant perennial with soft, lightly velvety, grey-green foliage. Upright stems carry numerous pale pink to white flowers with delicate veining from midsummer into early fall. Generally reaching 1.5 to 2 m in height, it creates a refined vertical presence in naturalistic, edible, and pollinator-focused gardens. The deciduous foliage dies back in winter, while the hardy crown resumes growth in spring. Once established in deep soil, this marshmallow plant returns reliably in Quebec gardens and provides a long season of ornamental interest through its textured leaves, graceful flowers, and strong architectural form.

Marshmallow prefers full sun and deep, organic-rich soil that remains moist while draining well. Its long taproot requires a permanent location where it can develop without repeated disturbance. Regular watering during establishment, flowering, and hot weather supports vigorous growth, but the soil should not remain continuously waterlogged. A spring application of mature compost and a layer of organic mulch are generally sufficient. In Quebec, cut back dry stems in spring and protect young plants with light mulch through their first winters. Avoid frequent transplanting after the root system has developed, and allow enough depth for healthy root growth in both garden beds and containers.

Marshmallow suits useful-plant gardens, naturalized borders, pollinator plantings, and moist but well-drained areas near water features. Its tall silhouette creates an attractive backdrop for wild bergamot, coneflower, blue vervain, and spotted Joe-Pye weed. The flowers attract bees, butterflies, hoverflies, and other beneficial insects over an extended summer period. Leaves, flowers, and roots have a long history of traditional culinary and craft use, and the plant inspired the earliest marshmallow preparations. Any material intended for consumption should come from correctly identified plants grown in uncontaminated soil and should be prepared cautiously, without treating traditional use as medical advice.

Sowing guide

It all startswith a seed.

Sowing depth

Surface sow or cover very lightly

Spacing / density

45 to 75 cm (18 to 30 in)

Germination temperature

18 to 22°C

Germination time

10 to 21 days after stratification

Sowing period

Spring or indoors four weeks before transplanting

Propagation

Seed, division, or root sections

Cold stratification

Yes

Growing method

Surface sow Marsh Mallow seeds in spring or start them indoors about four weeks before transplanting. Maintain even moisture without waterlogging the growing medium and keep temperatures between 18 and 22°C (64 to 72°F) for uniform germination. This perennial grows best in rich, organically amended soil and full sun. Once established, its deep taproot improves drought tolerance, while organic mulch helps conserve soil moisture and suppress weeds. Flowering generally begins during the second growing season, and the plant returns reliably year after year throughout Canada.

Soil and care

The right care,at the right time.

Soil pH

6.0 to 7.5

Minimum temperature

Approximately -35°C

Care level

Moderate

Watering

Regular; keep soil moist without waterlogging

Soil type

Deep, rich, moist, well-drained soil

Fertilization

Mature compost in spring; avoid excess nitrogen

Moisture

Moderate to high; prefers moist to wet soil

Seasonal care

In spring, remove the previous year’s dry stems and apply mature compost around the crown. Renew the mulch without piling it directly against the stems. During summer, water deeply whenever the upper few centimetres of soil begin to dry, especially while the plant is flowering. Remove spent blooms to extend the display or retain some seed capsules for collection. Stake tall stems in windy locations. In fall, leave several stems standing for wildlife and seasonal structure, then protect young plants with light mulch before severe cold. Established plants generally require less winter protection once their crowns and roots are fully developed.

Container growing

A garden,within reach.

Recommended pot size

40 to 50 cm (16 to 20 in)

Marsh Mallow can be grown successfully in a deep container at least 40 cm (16 in) deep using a rich, well-drained growing medium. Container culture makes it easier to control soil moisture and harvest the roots without disturbing the garden. Place the pot in full sun and water regularly during hot weather to maintain vigorous growth and abundant flowering.

Bloom and dimensions

Its place,in your garden.

Mature height

2 m

Width / spread

75 cm

Flower color

Pale pink to white

Foliage color

Grey-green

Foliage type

Deciduous

Growth rate

Moderate

Growth habit

Upright, robust and clump-forming

Fragrance

Flowers with a light, mild fragrance

Bloom period

July to September

Fruiting

Round seed capsules containing multiple seeds

Days to maturity

Leaves harvestable in the first year; roots generally after 2 years

Harvest

Leaves and flowers in summer; roots from the third year

Garden associations

In goodcompany.

Companion plants

Wild bergamot, coneflower, blue vervain, spotted Joe-Pye weed

Plants to avoid

Lavender, cotton lavender, rockrose, and stonecrop

Recipe idea

From the gardento your plate.

Edible parts

Flowers, young leaves and roots prepared with care

The flowers, leaves, and young shoots can be used in herbal teas, salads, and traditional culinary preparations. The mucilage-rich roots have long been valued for soothing herbal preparations and inspired the original marshmallow confection. Plant parts are typically dried for long-term storage. Today, Marsh Mallow is appreciated for both its traditional herbal uses and its ornamental beauty.

Frequently asked questions

Your questions,answered.

When should marshmallow seeds be planted?

Marsh Mallow seeds can be sown outdoors in spring or started indoors several weeks before the last frost. Transplant seedlings once the soil has warmed.

When can marshmallow roots be harvested?

The roots are generally harvested beginning in the third year, once plants are well established. Autumn harvests provide the highest concentration of beneficial mucilage.

Does marshmallow attract pollinators?

Yes. Its nectar-rich flowers attract bees, butterflies, hoverflies, and many other beneficial insects throughout the summer.

Can marshmallow be grown in a container?

Yes. Marsh Mallow grows well in deep containers that allow its taproot to develop properly. Container-grown plants require more frequent watering than those grown in the ground.

Is marshmallow hardy in Quebec?

Yes. Marsh Mallow is fully hardy throughout most of Canada when grown in rich, well-drained soil.

Wildlife and pets