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. Reliable, long lived and easy to grow, hardy ferns are tolerant of cold winter temperatures and can be grown outdoors year-round. Adaptable and versatile, hardy ferns can be used as border plants or in containers and even for erosion control.Most ferns do require a moist, shady spot to perform well.Hardy Ferns add textures to any shade garden. Fern care is easy when planted in moist, humus rich, and well-drained soil.daptable and versatile, hardy ferns can be used as border plants or in containers and even for erosion control. Most ferns do require a moist, shady spot to perform well. Hardy Ferns add textures to any shade garden. Fern care is easy when planted in moist, humus rich, and well-drained soil.