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.
Line arrangements work best with ferns that have stems with a narrow outline of foliage, such as asparagus fern (Asparagus densiflorus). Although not a true fern, the thin stems of bright green foliage make distinct lines and can establish height in a floral design.ine arrangements work best with ferns that have stems with a narrow outline of foliage, such as asparagus fern (Asparagus densiflorus). Although not a true fern, the thin stems of bright green foliage make distinct lines and can establish height in a floral design.