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.
Cycads are also non-flowering plants but have sculptural cone-like structures and often-colourful seeds. We have information on a range of different types of ferns, palms and cycads from the Birdâs Nest Fern to the Coconut Palm and many more ferns, palms and cycads. As well as advice on the soil and sunlight needs of ferns, palms and cycads.