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.
Boston Fern The most common indoor fern, Boston ferns are long-lived plants that can reach more than 5 feet tall and wide at maturity (though indoors they rarely reach that size). Fern breeders have released a large number of varieties -- from selections with golden fronds to fantastically frilled fronds.
There are lots of different varieties of fern. I grow several different types in my garden. They look so cool and refreshing in the shade when the sun is blazing down and everything else is looking a bit bleached and dry. I grow Maidenhair Fern as well as this more unusual one, whose name escapes me.