Orchids

In nature Orchids ( Family Orchidaceae ) living epiphitic on twigs of trees and other plants, but in order to grow Orchids can be grow in pots filled with certain media. There are several factors that affect plant growth, such as environmental factors, such as sunlight, humidity and temperature as well as maintenance such as : Fertilizing, Watering, and Pest Control.

In general, cultivated Orchids require the temperature 28 + 2 degrees Celsius with minimum temperature 15 degrees Celsius. Orchids soil is generally more refactory than the Orchids pot. But high temperatures can cause dehydration which can inhibit plant growth.

Relative Humidity (RH) needed for Orchids ranged between 60-85%. The function of high humidity for plants, among others to avoid evaporation is too high. At night, humidity is maintained so s not too high, because it can cause root rot o young shoots. Therefore, it is cultivated too the media in the pot should not be too wet. While a very low humidity during the day can be overcome by providing a spray mist around the plantation with the help of sprayer.

Based on the pattern of growth, Orchid plants can be divided into two types namely, Simpodial and Monopodial. Orchids Simpodial type that has no main stem, flowers out from the tip of the stem and flowering plants that come back from the child grows. Except in the Orchid species Dendrobium sp., who may issue the new flower stalks on the sides of the trunk. Examples of Orchid Simpodial types include: Dendrobium sp., Cattleya sp., Oncidium sp., and Cymbidium sp.. Orchid type Simpodial is general are Epiphytes. Orchid Monopodial type is characterized by the point of Orchids that grow there of the end of the stem, with the growth of straight up on one stem. Flowers out of the trunk between the two axillary panicles. Examples of types of Monopodial Orchids are : Vanda sp., Arachnis sp., Renanthera sp., Phalaenopsis sp., and Aranthera sp..

Habitat Orchid plants can be divided into 4 groups as follows:

Epiphytic Orchids, the Orchid that grows a ride on another tree without harming their host plants and require shade from sunlight, for example: Cattleya sp., require light +40%, Dendrobium sp., 50-60%, Phalaenopsis sp +30% and Oncidium sp 60-75%.
Terrestrial Orchids, the Orchid that grow in soil and require direct sunlight, for example Aranthera sp., Renanthera sp., Vanda sp., and Arachnis sp.. Terestrial Orchids plants need sunlight 70-100% with afternoon temperature range between 19-38 degrees Celsius, and at night 18-21 degrees Celsius. As for the Orchids species Vanda sp., which requires very little shade broad leaf.
 Lithophyte Orchids, namely Orchids that grow on rocks, and resistant to full sunlight, such as Dendrobium Phalaenopsis.
Saprophyte Orchids, namely Orchids that grow in media containing humus or dry leaves, and requires little sunlight, such as Goodyera sp..