Skip to content
Medicinal plant

Marshmallow

Althaea officinalis

A soothing mucilage for a dry, irritated throat. Also called Marsh Mallow.

A demulcent — its mucilage forms a soothing coat over irritated tissues, traditionally used for a dry, irritated throat and digestive mucosa.

Uses
Digestion — Herbs traditionally used around digestion, appetite, stomach comfort, or after-meal preparations. Respiratory — Herbs traditionally used in preparations for the throat, chest, sinuses, or seasonal respiratory comfort.
Properties

Demulcent — Coats, moistens, and soothes irritated internal tissues

Emollient — Softens, moisturizes, and soothes the skin

Pectoral — Soothes and supports the lungs, chest, and throat

Energetics
Cooling — Calms heat, irritation, or excess activity. Moistening — Adds or preserves moisture and soothes dryness. Relaxing — Eases tension, constriction, or spasm.
Marshmallow (Althaea officinalis), historical botanical illustration

Similar herbs: Mullein, Borage, Anise Hyssop

Growing and using it

Life cycle

Herbaceous perennial.

Hardiness

Current North American hardiness data supports roughly USDA Zones 3–7.

How to start

Seed or nursery plant. Choose Althaea officinalis.

Starting from seed

Cold stratify or fall sow.

Harvesting

Harvest leaves and flowers after establishment; dig roots from mature plants.

Grow in zone
Start indoors — Sow under cover in trays or pots, before it is warm enough to sow outsideStart indoors: FebruaryStart indoors: MarchDirect sow — Sow straight into the ground where the plant will growDirect sow: AprilDirect sow: OctoberDirect sow: NovemberPlant out — Move a started plant into its final spot outdoorsPlant out: MayPlant out: JuneHarvest leaves — Gather leaves in these monthsHarvest leaves: JuneHarvest leaves: JulyHarvest leaves: AugustHarvest flowers — Gather flowers in these monthsHarvest flowers: JulyHarvest flowers: AugustHarvest roots — Gather roots in these monthsHarvest roots: OctoberHarvest roots: November

Root harvest removes the plant, so leave some plants undisturbed.

Gardening tools

(Paid links)