Polystichum — 27 species

Polystichum — the shield and holly ferns — are elegant, evergreen or semi-evergreen ferns suited to shaded gardens and indoor spaces with indirect light. They thrive in dappled to full shade and need consistently moist, humus-rich, well-draining soil; even brief dry spells can cause frond tip scorch. Cultivars like Polystichum setiferum 'Divisilobum' and Tsusima Holly Fern bring finely cut, architectural texture to low-light corners. According to the ASPCA, Polystichum species are non-toxic to both cats and dogs, making them a genuinely pet-safe foliage choice.