Cyrtomium falcatum is also known as the Japanese Holly Fern or House Holly Fern and can tolerate a range of growing conditions, including coastal regions. Holly Fern is best in fertile, evenly moist, well-drained soil in partial to full shade but can tolerate a little more sun, lower humidity, and drier soil than most ferns. Plant outdoors in a location that has filtered light, especially during the hottest part of the day. Tolerates morning sun. Temperature, light intensity, soil moisture, and humidity, all contribute to the stress or success of your fern.
After planting your Holly Fern, water deeply and regularly for several weeks to reduce plant stress and facilitate root development. After roots have become established, reduce frequency and water as needed to maintain even soil moisture. The amount of water required is dependent on several environmental factors such as wind, temperature, soil type, and light intensity. Apply a layer of mulch to help retain soil moisture.
Pruning is not necessary, but any dead or damaged fronds can be removed at the base to improve the plant's appearance.
Cyrtomium falcatum is a hardy to semi-hardy fern hardy to 10°F suited for USDA growing zones 7-11. Evergreen in milder climates like zone 9 or above, but colder temperatures will induce a degree of dormancy depending on the cold nighttime temperatures. Semi-dormant Holly Ferns may still retain its foliage but will become discolored and the overall size and lushness may be reduced. When the nighttime temperatures warm up, new growth will emerge. Semi-hardy ferns are good choices for inland valleys along warmer coastal regions.