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Cymbidium
Culture
Commonly known as the King of
Orchids, these plants are prized for their large sprays of fragrant
flowers found in a multitude of colors. These blooms can last
1 to 3 months. Culture is relatively the same for both types
of Cymbidiums - Standards and Miniatures. Miniatures can bloom
earlier and tolerate warmer climates. These cultural requirements
apply to Cymbidiums grown here in the upper midwest.
- LIGHT
- During the outdoor growing period (May - September) Cymbidiums
require a fairly high amount of light. Place them in an area
that will receive good morning sun and/or late afternoon sun.
Avoid the mid-day sun. Provide as much light as possible without
sunburning. An outer edge of a tree canopy, east or north side
of a building are ideal spots to summer a Cymbidium. Indoors,
find your brightest, but coolest area. (i.e. south or west) During
flowering, keep from direct sun to prolong blooms. When flowers
have expired cut off the entire flower spike.
- TEMPERATURE
- Temperature is the most crucial factor in the blooming
of Cymbidiums. Therefore it is essential to grow them outdoors,
May - September, where day temps are 65° - 85° (or more)
and nights are 45° - 60° (or less). For flower induction
we recommend to leave your Cymbidium outdoors until the threat
of frost (35°) persists. These cool fall nights are the key
to producing flower spikes. When plants are back indoors (Oct.
- May) they prefer 65° - 75° days and 55° nights.
- HUMIDITY
- Outdoors, during dry conditions, hosing of leaves is beneficial.
Indoors maintain 40 - 60% humidity especially while plants are
budding. This can be achieved by grouping plants together and/or
placing them on a Humidity Tray.
- WATER
- Watering is dictated by environment and by how "root-bound"
or crowded the pot is. While outdoors Cymbidiums) like to be
kept evenly moist - not soggy and never left dry. Water 2 - 3
times a week during hot, sunny, windy days to once every 7 to
10 days during cool, damp, dark days. During periods of extended
rain, shelter plant to avoid "over-watering". Indoors
keep evenly moist, watering every 5 - 10 days. Take your plant
to the sink, water thoroughly (water runs freely from the pot),
drain well. NEVER ALLOW THE POT TO STAND IN WATER!
- FERTILIZER
- For health and vigor use 30-10-10 February - July. Dilute
1 tsp. per gallon of water and apply every third watering. Start
using Blossom Booster 10-50-10 in August, mixed and applied as
above. Continue until spikes are apparent or January.
* Remember: Water - Water - Feed!!
Note:
Mix your fertilizer ahead
and store in a plastic container that can be labeled and capped
(such as a used gallon milk jug). This ensures the solution is
thoroughly diluted, at room temp. and is convenient to use.
- REPOTTING
- Mature plants are potted every 2 to 3 years in spring,
after flowering. Remove what old medium you can without disturbing
too much of the roots. If dividing is desired, a division must
have 3 to 4 green bulbs with leaves. One or two bulbs without
leaves, that are solid can remain with the division. Select a
pot for 2 years of growth and use a fir bark type orchid mix.
Spread the roots over a handful of moistened medium in the bottom
of the pot and then fill the pot working medium among the roots,
pack in firmly. The junction of root and bulb should be buried
½" - 1" below the mix. Keep plants away
from direct sun and keep roots slightly drier for 3 - 4 weeks
- this encourages new root growth.

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