Bracken Fern
Pteridium aquilinum
A large, hardy fern featuring triangular, highly divided (bipinnate to tripinnate) fronds that grow from deep, spreading underground rhizomes. It often forms dense thickets.
- Light
- Full sun to partial shade; prefers dappled light in woodland settings.
- Water
- Moderate; thrives in moist soil but is exceptionally drought-tolerant compared to other ferns.
- Growth
- Perennial; deciduous. Spreads via vigorous underground rhizomes. Can reach 3–6 feet in height and spread indefinitely.
Care instructions
This is a wild, invasive fern that rarely needs care. It thrives in dappled shade to full sun with acidic, well-draining soil. Provide moderate moisture but it is highly drought tolerant once established.
Growing details
Sunlight
Full sun to partial shade; prefers dappled light in woodland settings.
Watering
Moderate; thrives in moist soil but is exceptionally drought-tolerant compared to other ferns.
Soil
Well-drained, acidic to neutral soil (pH 4.0–7.0). Tolerates nutrient-poor, sandy, or rocky soils.
Hardiness zone
3 to 10
Growth habit
Perennial; deciduous. Spreads via vigorous underground rhizomes. Can reach 3–6 feet in height and spread indefinitely.
Bloom season
Non-flowering; reproduces via spores located on the undersides of frond margins (sori) in late summer.
Propagation
Mainly through division of underground rhizomes or naturally via wind-dispersed spores.
Common pests & issues
None significant, as it is highly resilient; it is often considered a weed or fire hazard due to its dry, flammable fronds in autumn.
Similar species
Lady Fern (Athyrium filix-femina) has more delicate, feathery fronds. Ostrich Fern (Matteuccia struthiopteris) grows in circular clumps rather than a continuous carpet.