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.
Evergreen ferns, such as Christmas fern (Polystichum acrostichoides) and Boston fern (Nephrolepis exaltata), are among the most popular flower arrangement foliage, commonly used as filler in large, mass arrangements or to accent a single stem arrangement.lmost any shrub in your garden works well as foliage for a flower arrangement, providing that the shape of the foliage complements the shape and size of the flowers used.