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.
There are many forms of the Japanese painted fern, Athyrium nipponicum Pictum. They have varying degrees of green, dark red, and gray variegation on their fronds and, as a result, they are very popular plants in shade gardens.The variegated holly fern, Arachnoides simplicior var.here are many forms of the Japanese painted fern, Athyrium nipponicum Pictum. They have varying degrees of green, dark red, and gray variegation on their fronds and, as a result, they are very popular plants in shade gardens. The variegated holly fern, Arachnoides simplicior var.