“Standard” Cymbidium refers to the large-flowered species from the Himalayas and China. These well-loved plants produce large, attractive flowers that come in many different colors. The roundness of these flowers is a very desirable trait. Even though they are tolerant of extreme temperatures, to thrive and to produce flowers, they require frost-free cool nights (below 53°F/12°C) and warms days. They demand a little more fertilizer than most other orchids.