Cyathea delgadii, commonly known as Tree Fern, is an evergreen fern native to the understory of tropical and subtropical forests in South America. It is characterized by a tall, erect trunk that can reach heights of 1.5–10 meters (4.9–32.8 ft) and a diameter of 5–15 cm. The fronds are large and lacy, creating a dramatic, arching canopy that can spread several meters wide. The plant does not produce flowers but has a distinctive appearance with its tall, singular trunk and crown of green fronds.

Tree Ferns are valued for their prehistoric, lush appearance and are often used as focal points in shade gardens or in conservatories. They require consistent moisture and benefit from being planted in well-drained humus-rich soil. While they can tolerate some sun, they prefer dappled shade or part shade conditions, mimicking their natural forest floor habitat. In cultivation, they should be sheltered from strong winds and provided with a warm microclimate to thrive. Cyathea delgadii is not known for significant pest or disease problems, but it may suffer from root rot if overwatered or planted in poorly drained soils. It is not considered invasive when grown outside its native range.CC BY-SA 4.0