Trim 1 inch above that node, or bump, on the orchid spike. For unhealthy, brown spikes: Cut all the way back to the base of the plant. For double-spike orchids: Cut one spike at the base of the plant. Cut the other spike 1 inch above the node under the lowest flower bloom.
After the flowers drop from the orchid you have three choices: leave the flower spike (or stem) intact, cut it back to a node, or remove it entirely. Remove the flower spike entirely by clipping it off at the base of the plant. This is definitely the route to take if the existing stem starts to turn brown or yellow.
When the Phalaenopsis orchid is completely done blooming and all the flowers have faded, you can do the major pruning. Most orchids will go dormant in the fall, so plan on doing your pruning then. Trim the stem that had the blooms on it off about an inch (2.5 cm.) away from the main stalk.
Orchids will grow new stems, fortunately. You can propagate a new Phalaenopsis or Vanda orchids from stem cuttings. Or you can divide a cattleya's rhizomes. You can also expect a flower spike to grow back after cutting it down when its blooms die.
For healthy, green spikes: Find a node under the lowest flower bloom. Trim 1 inch above that node, or bump, on the orchid spike. For unhealthy, brown spikes: Cut all the way back to the base of the plant. For double-spike orchids: Cut one spike at the base of the plant.
If you do not remove the spike, the flower spike will dry up and turn brown over time. There are some orchids that can re-bloom off of the same flower spike more than once. Certain species of Oncidium such as the papilio can bloom off of a broken or cut back spike.
They will bloom again, but in the meantime, you have a few options: You can let it be, while making sure to fertilize it monthly or sometimes even as often as every other week. Use a houseplant fertilizer or balanced fertilizer (example: 20-20-20) at half the recommended rate.
To get a new orchid flower spike, place the plant in an area with a lower room temp — about 55–65°F at night should do it. Placing your orchid in a window away from the heater might work, too. We've had best success getting new flower spikes in winter, when our homes and their windows aren't as warm.
Your orchid has tightly tangled roots.
This is a surefire sign your orchid needs to be repotted. Give plants breathing room by placing it in a larger pot every year or two with fresh potting soil.
How long does it take a new orchid spike to grow? If you notice a spike forming, be patient; this fixture on your orchid can take around three months to grow. For healthy spikes, you'll want to have a healthy orchid in the first place.
Cut back the stem to the nearest bud
Instead, once all the flowers have fallen, cut off the stem to just above a visible joint (node). This should stimulate the production of another flower stem over the next few months.
After a period of rest, the plant will send out a new flower stalk, which may come from the existing stalk or from new leaves at the base of the plant. Give the old flower stalk a chance to rebloom; there is nothing to lose. Take a close look at the old flower stalk.
A brown or yellow spike will not produce any new buds. Weak, short or thin spikes are signs of inadequate light, too much light or a mineral deficiency.
After stems are purchased and brought home, 1/2 inch (approximately 2 cm) should be cut from the base of the stem with a sharp knife—if possible while the stem is submerged in water—then place the stems in a vase. Blooms should be kept away from direct sunlight and heat sources.
While each growing environment is unique, and watering habits vary from person to person, it is generally a good idea to water about once per 7-10 days, when the mix gets dry. Too much watering leads to root rot, crown rot and other over watering problems like fungus gnat infestations.
While there are many factors that can trigger blooming in orchids; a drop in night temperature, increase or decrease in day length and even sharp restriction in water availability, none of these will be successful unless your orchids have been grown with adequate light.
What About Watering Orchids In Bloom? Regularly water orchids that are blooming, growing new roots, or new leaves. While some orchids such as Cattleyas and Dendrobiums like to dry out between watering, others such as Phalaenopsis and Paphiopedilums like to remain evenly moist.
Orchids can and do grow without soil. They need a small amount of soil to germinate in, but as they mature they need less and less soil. In their native habitat, orchids are air plants. This means they root in very little soil, often on tree limbs, and get most of what they need from the air.
Cutting Off Dead Stems
This is the best way to encourage the plant to focus on growing healthier roots and encourage a full bloom in the next year. The healthier the root system is, the happier your orchid is going to be.
Larger pots are required for growing larger plants that have more leaves and roots. Pots of the same size can be used for about two years, and then, they have to be replaced with pots that are 1 inch larger in diameter when the orchids are repotted, which should be done once every one to three years.
Most orchids will have aerial roots reaching out into the air, rather than digging down into the potting media. These roots are looking for a tree branch to attach to. These roots absorb moisture from the air. Do not trim off these wandering roots, just let them do their thing.