Here at Gardening Know
How we get lots of questions, and our goal is to provide answers to
those inquiries to the best of our knowledge. Orchids
are popular flowers, but for newcomers, growing them can be intimidating. The
following information includes the 10 most commonly asked questions
about growing orchids.
are not as difficult to care for as some people fear; they are just different
from other houseplants. As epiphytes,
their roots need air circulation and moisture. Use an orchid growing medium
instead of soil and replant with new medium as needed. The medium will break
down with time, so keep an eye on it. Water your orchid plant about once a week
by soaking the roots in the sink. Use a fertilizer once weekly as well. Place
an orchid in a sunny spot and keep the air around it humid by setting the pot
on a tray of pebbles filled with water.
plants need to be watered once a week. When the growing medium is
dry for about an inch down or lower, the plant needs watering. When watering,
really soak the roots. Put the container in the sink and let water run over and
soak the roots several times.
The most important factor in choosing
a container for orchids is drainage. The roots need to be wet most
of the time but not sitting in water, so a pot with drainage holes is an
absolute must. Any kind of material is fine, but the best type of pot for an
orchid is clear or translucent plastic. In the wild, orchids grow with their
roots exposed to air and light, so this allows some light to get through to
need water soluble fertilizer
because they don’t grow in soil. A balanced fertilizer or one designed
specifically for orchids will work. Use fertilizer at least once a month but up
to once weekly. Mix the fertilizer with water as described on the package
instructions and use it to water the plant by soaking the roots.
cutting back orchids, it really depends on the type, as they have
various needs. For Phalaenopsis
orchids, trim off flowers as they begin to fade using sharp shears.
Cut back to the main branch. When it is completely done blooming, typically in
the fall, trim back the stem that held the flowers to about an inch from the
main stem. With a Dendrobium
orchid, you can cut back flowers as they fade, but leave the
flowering stem in place. New flowers will bloom on it later.
When an orchid drops its buds before blooming, it is called bud
blast. Buds are very sensitive and if you experience this, it is
likely the environmental conditions are not right and are impacting them. Some
causes include: too little light or too much direct light; dry air; extreme
temperatures, such as cold drafts from a window; over- or under-watering; air
pollutants; insect infestations; and too much fertilizer. Check your conditions
and make adjustments to get
the orchid to bloom.
on orchid plants can be frustrating but easily remedied in most
are immobile and will grow covers over themselves on the leaves of orchids.
Gently scrape these off to begin, and then use a gentle pesticide to treat your
plant until the pest is completely gone. Use neem oil in warm water or an
insecticidal soap once a week.
often grow new roots that emerge from the container; these are
called tendrils or air roots. As epiphytes, it is natural for orchids to have
roots exposed to the air. They absorb moisture and nutrients from the air.
Healthy tendrils are firm and whitish in color. These should not be removed.
They are healthy and normal. Dry, dead, or diseased tendrils can be removed
with a clean, sharp tool.
Orchids should never be planted in soil. They are epiphytes,
which means they grow with their roots exposed and attached to trees. The roots
absorb nutrients from the air and from decaying matter on the trees. In
containers they should be grown in specialized medium
or mix made just for orchids. There are different types of mix
depending on the variety of orchid. Common materials in mixes include tree
bark, peat moss, perlite, lava rock, tree fern, and sphagnum moss.
There are two reasons to repot
an orchid: when the roots start growing outside the container and
when the growing medium has broken down too much. The latter causes the medium
to become denser, preventing roots from getting needed airflow. Depending on
the orchid and its growing conditions, it may need to be repotted as often as
every six months or as little as every three years. Use a slightly larger pot,
brand new medium, and move the orchid when it is not flowering. Clean and soak
the roots before putting in the new pot.
We all have questions now and then, whether long-time
gardeners or those just starting out. So if you have a gardening question, get a
gardening answer. We’re always here to help.