Althaea officinalis Seeds (Marshmallow)

Marshmallow (Althaea officinalis) is a perennial plant species known for its erect, hairy stems and dense, lobed leaves. Also referred to as the marsh mallow, this plant grows up to 4 feet tall and boasts pink or white flowers that bloom from July to September. Marshmallow is well-suited for USDA hardiness zones 3 to 9. It thrives in moist, well-drained soil and full sun exposure. To propagate this herbaceous plant, Althaea officinalis seeds can be sown directly in the garden or started indoors. Known for its medicinal properties, Marshmallow is often used in herbal remedies for lung and digestive conditions.

Growing Althaea officinalis from Seed

• Growth cycle: Perennial
• Watering: Medium
• Sunlight: Medium Sun
• Suitable climates: Arid, Highland, Mediterranean, Semiarid, Subarctic, Tundra
• Where to grow: Outdoors
• Flower color: Pink

Germinating Marshmallow Flower Seeds

To germinate Althaea officinalis, sow the seeds in a tray filled with well-draining seed compost. Cover them with a thin layer of soil and provide water regularly to keep the compost moist. Place the tray in a warm and sunny location, maintaining a temperature of around 70°F.

We source all of our Althaea officinalis seeds from a small greenhouse facility based in southeastern Maine and store them in a dark, temperature-controlled environment before shipment. You’ll find that our fresh Marshmallow seeds are much easier to germinate than the mass-produced packets of flower seeds found in stores! If you have any trouble growing Marshmallow seeds, we’re happy to send you additional gardening tips. In the (unlikely) event that your Althaea officinalis seeds do not germinate at all, we’ll give you a full refund, no questions asked.

We offer this variety on Etsy, eBay, and Amazon, as well!

Shipping & returns

Our complete shipping and return policies are available right here. Get free shipping on your order by adding additional seed packets to your cart!