As covered in this article about orchids care and light, Cymbidiums need medium to bright light intensity in order to thrive, and do best with as much light as possible. If your Cymbidium orchid is receiving the optimal amount of light the leaves will be a yellow-green color.Too much light will cause the leaves to become yellow, and too little light will cause the leaves to become a very dark green color.ertilizer Requirements. When the Cymbidium is in active growth, you will want to fertilize regularly. An orchid fertilizer solution of (20-20-20) is recommended. During the winter months, applying fertilizer once a month is sufficient.
1. Astronomical Unit-a unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers). AU. astronomy unit-a linear unit used for astronomical distances.
A galaxy. One astronomical unit (AU) is the distance between the Earth and the Sun. In the 18th century, Venus was used to conceive a fairly accurate measurement method. Jupiter is 5AU from the Sun.