🌿 Marshmallow

Althaea officinalis

herbs Perennial Malvaceae

☀️ Sun

Full Sun

💧 Water

High

🗺️ Zones

3-9

🧪 Soil pH

6.0-7.0

🪴 Soil Type

Moist, rich

🚿 Drainage

Moist

📏 Spacing

18-24 in

📐 Height

36-60 in

Key:🤝 Grows well together❌ Keep apart☀️ Sun needs💧 Water🗺️ Hardiness zone

🤝 Companions (2)

🤝 Comfrey

Both moisture-loving perennials

🤝 Joe Pye Weed

Tall moisture-loving companions

⚠️ Keep Apart (3)

⚠️ Fennel

Allelopathic - may inhibit growth

⚠️ Mint

Aggressive mint competes for resources

⚠️ Walnut

Susceptible to juglone toxicity from walnut trees

📝 Growing Notes

The root is where marshmallows originally came from! Mucilaginous roots soothe sore throats and coughs. Beautiful pink hollyhock-like flowers.

🛒 Buy Seeds & Plants

Baker Creek Heirloom Seeds Johnny's Selected Seeds Botanical Interests True Leaf Market Burpee Territorial Seed Company

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