Perhaps the most common genera of orchids found for sale include Phalaenopsis, Dendrobium and Oncidium. Phalaenopsis is known as the “moth orchid” and is extremely popular among beginning growers; the genus Dendrobium contains about 1,200 species of orchids and is the classic epiphyte of orchids; Oncidiums are characterized by column wings and a callus at the lip of the flower. Different genera of orchids have different ideal humidities, growing temperatures, watering schedules, and light requirements. Talk with your local nursery or visit the local chapter of your orchid society to find out what makes your genus of orchid grow best.
Many people use bark chips, sphagnum moss, coconut husks, charcoal, perlite, and even styrofoam pellets as potting mix, often in combination. Experiment with porous, breathable mixes that you have on hand, or ask an expert for his or her special recipe.
Make a fine potting mix, suitable for slipper orchids, most oncidiums, miltonias, and orchids with small roots that enjoy moisture more than most: 4 parts fine (grain) fir bark or fine (grain) coco husk 1 part fine (grain) charcoal 1 part perlite Make a medium potting mix, suitable for cattleyas, phalaenopsis, and other mature orchids. If you’re unsure of which mix to use, try the medium-grade potting mix before the fine-grade mix: 4 parts medium (grain) fir bark or medium (grain) coco husk 1 part medium (grain) charcoal 1 part perlite
4 parts fine (grain) fir bark or fine (grain) coco husk 1 part fine (grain) charcoal 1 part perlite
4 parts medium (grain) fir bark or medium (grain) coco husk 1 part medium (grain) charcoal 1 part perlite
Net pots, which have wire mesh and allow for a breathable environment. These can be hung in advantageous locations for better sunlight. Clear plastic pots, which get better sunlight to the roots. These allow the grower to inspect the root systems without disturbing the orchid. Wooden pots, which are constructed of rot-resistant wood. Line any wooden pots with sheet moss before adding your potting mixture.
Dropping the temperature of the orchid’s environment at night by about 10 degrees will promote new buds, especially during the fall and winter. [5] X Research source
Check your orchid’s leaves if you want to diagnose whether it’s getting too much light or not enough. Orchid leaves should be a light green with yellowish tones. If the leaves are dark green, it means that the orchid isn’t getting enough light. If the leaves are yellow, brown, or reddish, it means they’re getting too much. [7] X Research source Low-light orchids ( Paphiopedilum, Phalaenopsis, and Oncidium) do best if they get northerly or easterly light. Moderate to high-light orchids (Cattleya, Dendrobium, and Vanda) prefer getting westerly or southerly light. Orchids love being behind curtains or window blinds. This way, they get plenty of light, but the light that they do get is indirect.
