Growing Guide: Marshmallow
Plant Marshmallow (Althaea officinalis) in full sun to part shade and provide moist, well-draining soil. This hardy perennial prefers consistent moisture and performs especially well in damp garden areas, wetland edges, and temperate food forests. Allow plants plenty of room to develop and provide good airflow around the foliage. Harvest roots when established and collect leaves and flowers throughout the growing season for traditional herbal preparations.
| Scientific Name | Althaea officinalis |
|---|---|
| Common Names | Marshmallow, Marsh Mallow, White Mallow |
| Family | Malvaceae (Mallow Family) |
| Origin | Europe and Western Asia |
| Plant Type | Medicinal Herb / Flowering Perennial |
| Life Cycle | Perennial |
| Food Forest Layer | Herb / Groundcover Layer |
| Mature Size | 3–5 ft tall and wide |
| Light | Full Sun to Part Shade |
| Water Needs | Moderate to High; prefers moist soil |
| Harvest Season | Summer to Fall (roots harvested in fall) |
| Time to Harvest | 1 year+ for roots; leaves/flowers earlier |
| Self-Fertile | Yes |
| Growth Rate | Moderate |
| Zones | USDA Zones 4–9 |
| Florida Native | No |
| Propagation | Seeds, Cuttings, Division |
| Seasonal Characteristics | Deciduous in winter; blooms in summer |
