Polypody
Polypodium vulgare · Polypodiaceae
📷 4028mdk09 · CC BY-SA 3.0
The gardener's calendar
Ideal time to plant polypody: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Evergreen, bright green
- Mature size
- 30 cm in height
- Growth
- Slow to moderate
- Hardiness
- Very hardy, down to -15 °C
- Exposure
- Shade to partial shade
- Water needs
- Moderate
- Origin
- Temperate Europe and Asia
- Plant type
- Fern
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
Plant this fern in rich, acidic soil with consistent moisture but no waterlogging. It thrives on a bed of sieved compost mixed with peat-based potting soil, in shaded exposure.
The common mistake
Watering it in a solid pot without adequate drainage: the rhizome rots.
The pro's trick
Divide established clumps (autumn) by removing rhizome segments with 2-3 fronds.
Care
Light Exposure
Polypodium vulgare prefers shaded to partially shaded areas, ideally beneath tree cover or against a north-facing wall. This fern dislikes intense direct sunlight, which dries out its delicate foliage. Indoors, place it near a window with no direct light.
Watering
Keep the substrate regularly moist but not waterlogged. Water when the soil begins to dry slightly on the surface, particularly during the growing season (spring-summer). In winter, reduce watering slightly.
Soil and Substrate
This fern appreciates a substrate rich in organic matter, well-draining and slightly acidic. A mixture of potting soil, peat or coconut fiber and fine bark works perfectly. Adding sphagnum moss improves moisture retention.
Fertilizing
Apply diluted liquid fertilizer or light foliar fertilizer once or twice monthly during the growing period (April to September). Avoid excess, as ferns are not heavy feeders.
Cleaning and Pruning
Regularly remove dead, yellowed, or damaged fronds at the base. Gently clean the foliage with a damp cloth to remove dust. No structural pruning is necessary.
Diseases and Pests
Polypodium vulgare is generally robust. Watch for spider mites in dry conditions and slugs outdoors. Stagnant excess moisture can promote root rot; ensure good drainage.
Did you know?
Its common name 'licorice of the woods' refers to the sweet and slightly anise-flavored taste of its rhizome, which was once consumed as an infusion in Europe. In the Middle Ages, this fern was used in traditional medicine for its supposedly expectorant properties, and its fronds were used by herbalists to preserve collection plants.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Polypodium interjectumPolypodium interjectum
- Southern PolypodyPolypodium cambricum
- Lecanopteris pustulataLecanopteris pustulata
- Notogrammitis billardiereiNotogrammitis billardierei
- Pleopeltis michauxianaPleopeltis michauxiana
- Licorice fernPolypodium glycyrrhiza
Tips generated and checked by Viridia — adapt them to your local climate.