GENERAL
Are
orchids hard to grow?
No. Contrary to popular belief, orchids are not difficult to grow.
Orchids just have a different set of cultural needs. Like any other
type of plants, orchids need water, fertilizer, light and air. Orchids
adapt well to the environment of the average home.
Do I need a greenhouse to grow orchids?
No. Many orchids thrive under normal household temperatures. For
best results, provide nighttime temperatures of 60 to 65°F and
daytime temperatures 75 to 85°F.
Other
orchids, such as Cymbidiums, Miltonias and Odontoglossums, tend
to prefer cool temperatures. For best results, provide nighttime
temperatures of 50 to 55oF and daytime temperatures of 60 to 80oF.
Place the plants near a cool window in the home. In temperate regions,
the plants may be grown outside under a protected patio.
What
is the easiest orchid to grow?
The answer to that question depends on whether you are looking for
something to grow indoors or outdoors.
Phalaenopsis
are among the easiest and most rewarding orchids to grow. An American
Orchid Society demographic survey showed that Phalaenopsis have
become America~s favorite orchid. The plants adapt well to the environment
of the home or office. From the time that the first flower bud opens,
the sprays will remain in bloom for the next 2 tp 3 months.
Odontoglossum
and Oncidium intergeneric hybrids are comprised of a large group
of orchids from many different genera. The Odontoglossum/Oncidium
alliance is very popular among orchid growers due to their cultural
flexibility and striking sprays of long-lasting flowers. The plants
may be grown with relative ease in the home or on a sheltered patio.
How
long do the blooms on an orchid last?
The answer to this question depends upon the type of orchid in bloom.
Flowers on Cattleyas may last up to a month in bloom from the time
that the bud opens. Whereas, Phalaenopsis and Cymbidium sprays will
remain in bloom for 2 to 3 months longer.
How
often do orchids bloom?
The answer to this question depends upon the type of orchid. Some
bloom once a year, others bloom several times a year and some even
bloom continuously.
Are
orchids fragrant?
Some orchids are fragrant. The scents from fragrant orchid flowers
are highly variable. Some are subtle and others are extremely strong.
And range from fruity to flowery. Many of the orchids have familiar
aromas such as chocolate, raspberry, coconut, lilac or citrus.
How
often should I water my orchids?
Depending upon the temperature, orchids potted in bark should be
watered about once or twice a week. During the summer, the plants
may need to be watered every 4 to 5 days. You should follow this
rule of thumb for watering : More heat more water, less heat less
water.
Plants
potted in New Zealand sphagnum moss should be water less often.
Water plants once every 7 to 10 days.
Some
orchids prefer to be kept on the moist side. This does not mean
that the orchid like to be left in standing water. Try to water
the plants early in the day, so that the foliage will be dry by
nightfall. To prevent bacterial and fungal disease, use Physan 20
once a month.
How often do I need to fertilize my orchids?
Orchids must be fertilized on a regular basis! It is recommended
to pre-water plants before applying the diluted nutrient solution
if the potting media is dry.
What
kind of soil do I need to grow orchids?
None. Orchids do not grow in soil. In the wild, most orchids are
found high above the jungle floor, in the tree canopy. For best
results, orchids should be grown either in New Zealand sphagnum
moss, fine orchid bark mix or medium orchid bark Mix. Orchids must
be grown in pots with good drainage. Soil is bad for the plants
because it cuts off air circulation at the roots and blocks the
drainage of water.
When is the best time to repot my orchids?
Ideally, orchids should be repotted immediately after flowering.
Any plant that is potted in decomposed, packed bark should be repotted
immediately.
Most
orchids need to be repotted once every 1 to 2 years. The bark or
moss that the orchids are grown in gradually deteriorates. If repotting
is not done, the bark or moss become decomposed and packed down.
Under these conditions, roots are not properly aerated, drainage
becomes blocked (so there is too much standing moisture), and the
plant eventually dies from asphyxiation and root rot.
PLANT
There
is not apparent sign of new growth. What am I doing wrong?
This may not be the right time in the plant's growth cycle for new
growth. Do not attempt to force the plant with extra fertilizer
or watering. This will not help the situation. In fact, such actions
will have adverse effects on the plant. Be patient.
The plant refuses to flower. What is wrong with the plant?
Several possibilities may have occurred:
1) The plant may not be getting enough light. If this is the case,
simply move the plant to a slightly brighter location, 2) The proper
growth cycle is not being observed. Find out what time of year is
the blooming period in the plant's natural growth cycle. This may
simply be the wrong time of year to expect the plant to bloom, 3)
Sometimes, if the plant was purchased as a first time blooming plant,
it may not bloom the following year. Be patient. Once the plant
is older it will bloom regularly.
There is sap on my orchid. Should I be concerned?
No. It's normal for orchids such as Dendrobiums, Oncidiums and Cattleyas
to produce honey on the flower stem. Mother nature built in the
sap producing process to help the orchid attract insects for pollination.
Orchids rely on insects to pollinate the flowers for the continuation
of the species.
LEAVES
The
leaves on my orchid turned yellow. Should I be concerned?
The answer to this question depends upon which leaves are involved.
Yellowing of old leaves on backbulbs is a normal part of the aging
process. Therefore, this should not be of concern.
However,
yellowing of newer leaves is a sign of trouble. Orchids with yellow
leaves are an indication that the plant is suffering from either
too much light or insufficient feeding. Increase the shading and
apply orchid nutrients as directed. Other causes of yellowing include
loss of roots and stress due to low temperatures.
What
should I do about the blacked area on the leaves of the plant?
Blackened area on leaves may be caused by either sunburn or bacterial
or fungal disease.
The
appearance of black areas on the surface of the leaves, following
a hot sunny day may be the result of sunburn. Exposure to direct
mid-afternoon sunlight during the late spring through early fall
will scorch the leaves of some orchids. Increase the shading or
move the plant to a less sunny location.
If
the blackened area increases in size, this is an indication of bacterial
or fungal disease. Cut off the diseased area with a sharp, sterile
tool(i.e., razor blade or knife). Then treat the plant with a fungicide
like Physan 20.
What
causes the tip or ends of the leaves to become blackened?
Blackened leaf tips may be caused by hard water, overfeeding with
orchid nutrients or fungal disease. Remember that the potting mix
needs to be flushed out thoroughly with plain water in between feeding.
Cut off any black tips on leaves to prevent the die -back from continuing
to run back down the leaf. Use a sterilized pair of scissors.
The
leaves on the plant are limp and there is soft growth at the base
of the plant. What is happened?
The orchid bark mix or New Zealand sphagnum moss is waterlogged.
Withhold water. Give the plant a week to dry out. Two possibilities
may have occurred: 1) Orchids do not like to be left in standing
water or 2) The time interval between watering is too short. For
example, if the plant was watered every 7 days and became waterlogged,
increase the time span in between watering to 10 days. Try to water
the plants early in the day, so that the foliage will be dry by
nightfall. To prevent bacterial and fungal disease, treat with Physan
20 once a month.
There are small reddish brown spots turning black on the
leaves. What should I do?
This is an indication of a fungal infection. Fungal infections are
usually the result of warm temperatures, high humidity and low light
levels. Treat the plants with a systemic fungicide such as Phyton
27.
FLOWERS
Where
should I cut off the flower spike after the plant finishes blooming?
The answer to this question depends upon the type of orchid in question.
Phalaenopsis plants may flower again for a second time. After the
plant goes out of bloom, cut the stem right below the first flower
on the spray. A new spray of flowers may emerge from the node below
it. For all other orchids, cut off the old flower spike at the base
of the plant.
What causes deformed flowers?
If a plant consistently produces deformed flowers year after year,
the problem is genetic.
However,
an occasional deformed flower may be caused either flower buds that
were subjected to the stress of high temperature and low humidity;
mechanical or chemical damage.
The
new buds dropped off and the flower(s) wilted shortly after it opened.
What happened?
Several factors will cause bud drop and flower wilting. The flower(s)
may have been stressed by a sudden change in temperature. Another
possibility is the exposure of the flowers to ethylene gas. Ripe
fruits have been known to produce this type of gas. Try to keep
fruits away from orchids in bud or bloom. If the plant is kept in
the kitchen, beware of a possible gas leak from the stove.
There
are small black spots on the flowers. What should I do?
Black spots on flowers are usually caused by Botrytris, a fungus.
The problem is caused by poor air circulation and too much moisture.
The remedy is to increase air circulation and reduce the humidity.
ROOTS
There
are lots of root on the outside of the pot. What should I do?
The cause of the problem is neglect. Orchids grown in fine bark
need to be repotted every year. Whereas, orchids grown in medium
bark need to be repotted every two years. Simply repot the orchid
and put the roots back into the pot.
A
few of the root on the surface of the pot are still alive. However,
most of the root inside the pot are dead. How can I stimulate the
plant to produce more roots?
Dip the plant in Rootone (rooting hormone) or Dip~n Grow to help
stimulate new root growth.
PESTS
How
can I get rid of the snails that are devouring my flowers and shredding
up the new leaves on my plant?
Metaldehyde is an effective agent for eradication of slugs and snails.
Sprinkle Slug-N-Snail granules on top of the pot.
What
is the best way to get rid of the aphids on my orchid?
X-CLUDE, encapsulated pyrethrum time-release insecticide is the
most efficient method of pest control.
How
can I get rid of the scales and spider mites on my plant?
Common pest associated with Cattleyas are scale and spider mites.
X-CLUDE, encapsulated pyrethrum time-release insecticide or Neem
Oil are the most efficient methods of pest control.
DISEASE
What
is the best way to deal with bacterial and fungal disease on my
orchids?
The most efficient method to treat bacterial and fungal disease
is the regular use of a systemic agent such as Phyton 27. The agent
will be absorbed by the roots of the plant and then carried throughout
the plant. Once the Phyton 27 is absorbed by the plant it will remain
in the plant~s system for months.
How
can I prevent bacterial and fungal diseases?
Orchids benefit from fresh air circulation. In their natural habitat,
orchids get excellent air circulation, which helps prevent bacterial
and fungal diseases. Avoid cold drafts from coming in contact with
the plants as well.
Try
to water the plants early in the day, so that the foliage will be
dry by nightfall. To prevent bacterial and fungal disease use Physan
20 once a month. |