The Autumn Fern plant is a very popular bedding plant and will look great on your landscape. The Autumn Fern plant grows 1-2 ft. tall and should be placed 15 in. apart from the others and is easy to grow in ordinary, well-drained soils. The Autumn Fern plant spreads by underground stems. The Autumn Fern plant prefers shade, moisture and is evergreen. The young papery fronds of the Autumn Fern plant are reddish, then orange, but turning green as it matures.