Fertilization

Fertilizer requirements for orchids depend largely on the type of plant being grown, and the type of growing media in which the orchid is growing. A good general rule is to apply fertilizer once a week while the plant is producing new growth. As the new growth begins to mature, decrease fertilization. Discontinue fertilizing entirely when the plants become dormant, or stop producing new growth. A good practice is to water at least once a month with plain water to prevent root burn from overfertilization.

Specially formulated orchid fertilizers are available that are already diluted. Follow the label directions exactly when using orchid fertilizers. Equally balanced fertilizers such as 10-10-10 or 12-12-12 can also be used, but these fertilizers must be diluted to one-quarter strength before application.

Orchids planted in bark require higher nitrogen rates than plants in other growing medias, so a ratio of the old growing media and rinse the roots under tepid water. Before repotting, trim off any dead roots, dead or yellowed foliage, dead flower spikes and dead or rotting psuedobulbs (a thickened stem on some types of orchids that is used to store water). Replant the base or the crown of the orchid at the same level it was growing prior to repotting. To avoid spreading pests and disease, use a clean workplace, sterile pots, sterile growing media and never transfer soil from one plant to another.

Containers

Drainage is one of the most important factors to consider when selecting containers for your orchids. Containers designed especially for orchids have slits down the side for added drainage . Some containers have drainage holes in the bottom of the pot. If these holes are too small, they can be enlarged. Clay and plastic are the most popular materials for 20-10-10 or 30-10-10 fertilizer is recommended.

Growing Media

Drainage and aeration are the two most important factors to consider when choosing a growing mix. Special blended media can be purchased at most retail garden centers for growing orchids. These mixes contain fir bark, peat moss and either perlite or vermiculite. Many orchid growers prefer mixing their own growing mix. There are several types of growing media to choose from, such as tree fern, redwood bark, cork, sphagnum peat moss, Osmunda, charcoal, Rockwool, polystyrene foam, rock culture and sand. The growing media
used is a personal preference, depending upon growing conditions and environmental factors of the grower.

Tags: growing orchids, orchid pictures, about orchids,  orchid culture

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