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.
Shade. Many ferns tolerate partial sunlight but perform best in shade. For example, Japanese holly fern (Cyrtomium falcatum Rochfordianum), hardy in U.S. Department of Agriculture plant hardiness zones 6 through 10, is a shade-loving fern with deep green, holly-like fronds measuring as long as 30 inches.assel fern (Polystichum polyblepharum) is a striking, 18- to 24-inch fern that grows best in full or partial shade. Tassel fern grows in USDA zones 5 through 8. A sturdy fern that prefers shade, deer fern (Blechnum spicant) grows in USDA zones 5 through 8.