Place orchids about 8 inches 20 cm beneath the light for hours a day. It's also important to give them darkness at night. Orchids need a rest, too. Without question, orchids love humidity. Grouping plants also helps to maintain the humidity around them. Give it some air. Giving your cymbidium orchids plenty of air circulation will help to prevent fungus. Place orchids where they'll enjoy free-flowing air, away from heat or AC vents. To repot The main ingredient in orchid potting mix is fir bark, which breaks down after a couple years and needs replaced.
Cymbidiums bloom best when slightly pot-bound, so you can keep them in the same container or go 1 size up. The best time for cymbidium orchid repotting is in summer, after it stops blooming. Give it a rest. Cymbidium orchid plants need cool temperatures to trigger flower buds. Cut back on watering during this cool rest, keeping the medium only lightly moist. After that, you can move your orchid back to its usual location. Flower spike initiation takes place in mid- to late summer, when plants require good light and a distinct drop between day and night temperatures.
Placing the plants outside helps to provide such conditions. Wait until the flowers have opened before moving the plant into a warmer environment for display purposes. Support developing flower spikes with a bamboo cane. Flowers generally last for six to eight weeks. Once the blooms have faded, cut down the flowered stem to the base. Cymbidium needs moderate watering during spring and summer, depending on the conditions.
Water from above, making sure that excess water can drain away. Do not allow the plant to sit in water. Let the compost dry out a little before the next watering.
Plants placed outdoors or in the greenhouse may need more frequent watering in hot weather. Outdoor plants may only need occasional watering if the weather is wet. Reduce watering to weekly or fortnightly in winter. Apply half-strength general liquid fertiliser every third watering in spring and switch to a high potassium specialist orchid fertiliser in summer.
Stop feeding altogether, or feed only occasionally in winter, using half-strength general liquid fertiliser. Repotting your orchid needn't be a daunting task and can help ensure it grows healthily and flowers well.
Cymbidiums are best repotted in spring just after flowering. Below are some useful tips to remember;. New hybrids are produced every year, but most of these are sold unnamed.
Only specialist orchid nurseries offer named species and hybrids. New introductions tend to be easier to grow, but for the keen grower, here are some species to try:. Cymbidium erythrostylum : Compact with white flowers and red lip. Cymbidium can suffer the same problems as other orchids, including mealybug , red spider mite , aphids , and slug and snail damage if kept outdoors. If you suspect a virus, destroy or isolate the plant. Potted around the house indoors or outdoors to provide stunning colour and style to indoor spaces, as well as the garden.
Orchids will not grow in garden soil but can be made to look as if they are growing in the garden by planting them in orchid potting mix on top of the garden soil.
Cymbidiums are also used as cut flowers and in corsages. Grow in specialist cymbidium orchid potting mix with good drainage. The potting mix is made up of pine bark, peat, coarse sand and polystyrene. Mix in more fine pine bark for even better results. Do not grow these plants in soil in the ground. Maintain moist potting mix by watering once or twice a week, depending on the weather and fertilise with specialist orchid fertiliser, such as Nitrosol and Aquasol available from most nurseries.
Different formulations are available to encourage flowering and growth. A fine spray over the foliage, in addition to pot watering, is beneficial unless the weather is cloudy. These plants have long thin leaves what are prone to tiny, almost invisible spider mites on the undersides. To avoid getting the mites, take the plant into the shower once a month and spray the foliage lightly with room temperature water.
If you have spider mites, insecticidal soap sprayed 3 times, one week apart, should control them. Many different potting media have been used for cymbidiums-straight osmunda, fiber, rockwool, or fir bark, mixes of loam, dried oak leaves, and redwood fiber, or various combinations of standard horticultural materials.
The important thing is to have a light, porous medium, capable of holding moisture but draining thoroughly. When plants need to be divided and repotted, do it in the spring after blooming. Repot only when the medium has broken down, for cymbidiums do best when not disturbed. Cymbidiums produce an extensive root system and may be "overpotted" more readily than other orchids. Select a pot which, once the plant has been placed in the center, allows space for at least two years' growth.
0コメント