Adiantum raddianum, the Delta maidenhair fern, is one of the most popular ferns to grow indoors. Its common name comes from its shiny, dark leafstalks that resemble human hair. The triangular fronds are semi-erect in the beginning then droop gracefully as they age and can be up to 12 inches (30 cm) long by 6 inches (15 cm) wide.
This plant is hardy down to 5 °C (41 °F), so must be grown indoors in temperate regions. However it may be placed outside in a sheltered spot during the summer months. It ...