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Althaea Officinalis (Marshmallow Root)

Althaea Officinalis (Marshmallow Root)

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Althaea Officinalis (Marshmallow Root) is a traditional medicinal perennial herb grown for its soothing roots, soft foliage, and delicate pink flowers. Long valued in herbal medicine, it is commonly used in teas and natural preparations to support throat and digestive wellness. Its tall, elegant growth habit also adds ornamental appeal to cottage and apothecary-style gardens.

Marshmallow Root thrives in full sun to part shade in moist, fertile, well-drained soils and performs best with consistent watering. It is ideal for damp garden areas, herb beds, and naturalistic plantings where soil moisture is reliable. In summer, it produces pale pink flowers that attract pollinators, enhancing both biodiversity and visual interest

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Mature height

90–150 cm

Mature width

60–90 cm

Spacing

60–90 cm apart

Evergreen/Deciduous

Herbaceous perennial (dies back in winter)

Foliage

Soft grey-green foliage, pale pink flowers

Flowering Period & Fruit Development/Harvest

Summer

Sun tolerance

Full sun to part shade

Maintenance

Low maintenance; prefers consistent moisture and rich soil

Root System

Deep, fibrous root with fleshy medicinal taproot