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.
Fern. Ferns are perfect for the back of the garden or in a woodland setting. Their gracefulness makes them especially well-suited for companions to hosta. They can perform well in sun but prefer partial to full shade. They are easily grown in well-drained, organic-rich, acidic soils and spread slowly by creeping rhizomes to form large colonies. Ferns have no serious insect or disease problems.