Coin spot tree fern (Cyathea cooperi), sometimes called lacy tree fern, is a fast-growing, semi-hardy species of tree fern native to Australia. The fern thrives in the cool, moist environments found in Sunset's Climate Zones 15 to 24, where it will reach an ultimate height of 20 feet under ideal conditions. Coin spot tree ferns require little care once established if humidity is high and the soil is moist and rich. The ferns are somewhat susceptible to cold damage if temperatures drop below 20 degrees Fahrenheit, so it is best to grow them in a sheltered spot.
Source
Source
Coin spot tree ferns will grow in full sun in Sunset's Climate Zones 15 to 17 if you protect them from drying winds and salt spray, but partial shade during the hottest part of the day is best.
Source