The sections of the light spectrum which the âredâ and âgreenâ cones perceive overlap and this is why red and green colour vision deficiencies are often known as red/green colour blindness and why people with red and green deficiencies see the world in a similar way.
Wood fern (Dryopteris) Plant these delicate, medium-sized ferns in mixed borders to show off their feathery fronds. Autumn ferns (D. erythrosora) are one of the few ferns with seasonal color variation and their fronds change from pale gold and pink in spring to green in summer and rusty copper in fall. The ferns spread by underground stems to form swaths in garden beds.
Ferns are part of an ancient group of plants, including mosses and liverworts, that dates back about 300 million years -- before the dinosaurs! As you may guess from a plant that old, they're easy to grow and there's a fern suitable for almost any location. Hardiness varies by species. How to Grow Fern Plants in Your Garden Plant ferns in part to full shade and rich, well-drained soil. In all climates, they need protection from afternoon sun to prevent drying and leaf scorch.