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.
No flower arrangement is complete without a backdrop of ferns to set off the beauty of the flowers. Without the right variety of ferns and greenery for balance, orchids will clash and drown in each other's ornateness and roses will may simply look gaudy.Many ferns used in floral arrangements are not true ferns but are members of the lily family, which are closely related to asparagus.ithout the right variety of ferns and greenery for balance, orchids will clash and drown in each other's ornateness and roses will may simply look gaudy. Many ferns used in floral arrangements are not true ferns but are members of the lily family, which are closely related to asparagus.