Why is My Orchid Not Blooming?

Last Updated on November 6, 2022 by Stephanie

The reason orchids arent blooming is usually due to the fact that temperatures are too high in the evening. The orchids need the temperature in the evening to be 10 degrees lower than the daytime temperature in order to stimulate the growth of an additional flower spike and encourage flowering. If there isnt a contrast in temperatures between night and day orchids will not bloom.

The reasons why orchids arent flowering:

  1. Orchids need an evening temperature that is cooler to stimulate flowering.
  2. Insufficient sunlight to encourage flowering.
  3. The flower spikes need to be cut to encourage the growth of new spikes and blooms.
  4. An absence of fertilizer.
  5. Drought Stress and low humidity hinder flowering.
  6. The wrong potting medium can cause stress to orchids and hinders flowering.
  7. Orchids require a period of rest in winter to allow them to bloom.

Making sure that the orchid has temperatures that are 10 degrees lower at night than the daytime temperatures is among the most reliable methods to encourage blooms.

Read on to find out the reasons why your orchid isnt blooming and the best way to apply the remedies, so that your orchid will bloom more frequently…

1. Orchids Require a Cooler Temperature at Night to Stimulate Flowering

Orchids can grow in a particular pattern of temperatures, with more humid (and less humid) daytime temperatures of 75 degF-66degF (19degC up to 23degC) and 61degF-66degF (16degC up to 19 degC) in the evening. ( phalaenopsis or moth orchids can tolerate daytime temperatures as hot as as 86degF (30degC).

The variation in temperature between an evening that is cooler, and a warmer day encourages the orchid to develop new spikes of flower and blossom.

If there isnt any variation in temperature between night and day, orchids can flourish, however, it usually does not flower.

This is especially problematic in homes since the temperature tends to rise in homes in the evening by heating systems, rather than cooling down, which is in contradiction with orchids natural habitat.

orchid in grey pot

Solution…

In order to encourage flowering, it is essential to mimic the change in temperature between night and day at home by putting your orchids in a nice cool spot in the evening , which generally ranges from 55degF between 66 and 55degF (12degC between 19 and 20degC) or 5 degrees cooler than the normal daytime temperature on a the window sill or on the porch for instance.

Make sure that the orchid is out of the away from any sources of heat sources.

It is crucial to know that orchids can adjust to varying temperatures and can generally withstand temperatures that is 55 degrees Fahrenheit (12degC) at night , and the maximum temperature during the day that is 75degF (23degC).

Try to achieve a contrast in temperatures of about 10 degrees Fahrenheit (5degC) lower in the evening for about 2-4 weeks to encourage the growth of blooms and spikes of flowers.

After a couple of weeks of cooler temperatures at night, the new flower spike will appear, which means that the orchid will bloom once more.

Commercial orchid growers who provide gardens, expose their orchids to cooler temperatures in nurseries to grow the new flower spike, to allow the orchid to bloom and appear best when sold , which is the way moth orchids are cultivated to bloom at any time of the season.

2. Cut back flower spikes that have been sprayed to stimulate flowering

After the orchid has shown the flowers it has on its flower spike , they typically do not display flowers on another node that already has flowers at the exact same time on that spike.

It means that your orchid is already blooming and the flowers have fallen off and the flowers have fallen off, you could get a long green spike of flowers without flowers, and one that will not display any additional flowers.

Sometimes, the flower spike can turn yellow or brown, or even all the way all the way back to the bottom of the plant. In this the flower spike is unable to create a new side shoot or produce more flowers.

The Solution…

It is not a sign that it is dying (particularly when the other orchids appear healthy and green) However, you must cut any flower spike that has turned yellow or brown and back to the root and the stem.

This will help stimulate an increase in the size of fresh flower spike that could display more flowers.

If the spikes of flowers remain green, but are not blooming, cut the spike approximately 1/2 centimeter (2 centimeters) above a node or a shoot that is emerging.

Orchids usually develop a new growth out of an established flower spike that could be used to show flowers.

In order to stimulate the growth of new spikes of flowers, orchids typically require a decrease in nighttime temperatures by about 10 degrees Fahrenheit (5degC) for about 2-4 weeks.

This encourages the growth of the new flower spike. It also signalizes to the orchid that its the perfect moment to show flowers.

If youre not sure which way to cut the flower spike, take a look at this YouTube tutorial to get all the details you require:

3. Not Enough Light for Flowering

The most common orchids for house plants ( Phalaenopsis, commonly referred to as moth orchids) are native to tropical forests of Asia in Asia, where they thrive in filtered light or direct sunlight that is bright and intense.

In such conditions that are found in the bright areas of the house that orchids bloom for longer and more frequently. If the orchid is located in an area that is shaded in your house with very little light, the orchid will not have enough energy to encourage the production of flowers.

The Solution…

To encourage flowering in orchids, it is essential to replicate the amount of light they normally experience in their natural habitat.

It is important to avoid placing orchids in rooms that have North facing windows. This is because although the orchid might bloom in these circumstances however, its less likely to bloom again or bloom to its fullest potential.

While some light filtered can be tolerated (particularly in northern latitudes like New York, the Pacific North West or the UK in areas where the suns intensity is lower) it is nevertheless crucial to avoid direct sunlight for too long since the leaves of orchids are sensitive and could burn the leaves and turn brown or yellow when exposed to excessive sunshine.

It can also cause stress to the plant , which can result in the flowering of existing ones to stop or stop the orchid from blooming.

Put the orchid inside a nice bright space to replicate the natural environment in which it thrives. the orchid will be energized and have the resources needed to show off its flowers.

4. Not Enough Fertilizer Prevents Flowering

The most commonly used orchids that are used in the house ( Phalaenopsis) are epiphytic. This means they are able to grow on trees within the tropical forest. They get a significant amount of water and nutrients they require from the air around their roots as well as loose aggregates (such like moss and tree bark) surrounding them, rather than from soil, as is the case with the majority of house plants.

Orchids are often exhausted of the nutrients available in the medium used for potting, especially when theyre within the same container for too long , which implies that the orchid doesnt have the resources needed to create additional flower spikes or show flowers.

In an indoor environment, its difficult to duplicate the natural process of orchids getting nutrients through the air.

The Solution…

In order for orchids to get all the nutrients they need to bloom it is essential to apply a specific fertilizer for orchids that is available in the form of a spray, that is applied directly to the Ariel root as well as in the medium for potting.

It is essential to choose an orchid-specific product that has all the essential nutrients that orchid needs in the proper concentration for blooms to be visible.

The typical fertilizer for houseplants can cause burning of the roots, so make sure to use an appropriate product and apply fertilizer each week during the spring and summer to encourage flowering. orchids that are fertilized dont bloom well..

5. Drought Stress and Low Humidity can Stop Blooming

The majority of orchids in the house ( Phalaenopsis) are tropical plants that thrive in areas with frequent rain (although they thrive in well-draining conditions) and have adapted to conditions with more humid conditions.

The humidity of our homes is usually about 10%, whereas orchids generally prefer humidity of 50 percent.

The difference in humidity can cause the orchid to shed excessive water from its leaves, which results in shrinking roots. The orchid then loses its flowers or becomes under too much stressed to make additional flowers.

The low humidity we experience in our homes is usually exacerbated by:

  • The air currents are caused by central heating or forced air conditioning.
  • Draughts from windows that are open.
  • Too much sunlight.

The Solution…

This is why orchids typically more productive and bloom more when they are planted in bathrooms since the humidity levels are usually close to the forest habitat in which they are native.

But you can develop and recreate the ideal conditions for orchids to bloom in any space in your home by misting the roots, leaves and flower stems every day or every other day.

By misting orchids, you can create a moist microclimate that decreases the amount of water loss through the leaves and mimics the conditions of the tropical climate.

If you reside in an area that is particularly dry, I suggest purchasing an orchid humidifier at the local garden center (or amazon) that allows you to regulate the humidity the orchid to a specific level to ensure that it can have all the resources and conditions to bloom.

(Read my article on ways to revive an orchid that is dying to learn more information on orchids that suffer due to low-humidity).

6. Overwatering and Saturated Soil Mediums Prevents Blooming

The most frequent errors when caring for orchids is to to water the orchid over and over again.

Although most orchids in the house grow in areas with a lot of rain They are epiphytic, meaning they are able to grow on other trees, that means they have adaptable to conditions of growth that include adequate drainage, airflow as well as high levels of humidity surrounding their roots.

If the orchid is not watered often and the roots of the orchid are kept in a moist potting medium, the roots could get rotten.

The dying roots put stress on the orchid , and are unable to absorb and move the moisture and nutrients around the plant essential for blooming. (Read my article on on how you can revive an orchid that is dying when the roots are shrinking and dying or decaying.

If the orchids roots are unhealthy, are unable to show flowers.

The Solution…

It is essential to plant orchids in an proper potting medium, which in cases of Moth orchids (pahalenopsis) is an based on pine bark medium since it mimics natures conditions in the native environment , with a great drainage. It also allows humidity to flow around roots.

This helps to keep the roots healthy and reduces some of the risks of overwatering because of the drainage system that is excellent so that your orchid will bloom.

Water orchids are blooming every 7 to 10 days during spring and summer (when they are more likely bloom) and every 10 or so days in winter to ensure the orchid is healthy so that it will bloom.

The potting mediums made of moss may be ideal for orchids, but you must repotte them frequently because they degrade faster than bark-based mediums, which makes them retain more moisture and decrease the oxygen levels within the root.

This can then result in root rot, resulting in dying orchids (read my article on what is the reason my orchid dying? ).

If the orchid is in any kind of stress, it will likely invest its energy in the immediate survival of the harsh conditions and growth to replace any roots that may have lost In this case, it could take up to a year of good conditions before the orchid can begin to show flowers again.

(Read my article on on how you can water your orchids to find out how often to water your orchids during different seasons and under different conditions).

7. Orchids Need a Rest Period in Winter to Display Flowers

Certain orchids like to rest during winter as temperatures drop and they require less watering and no fertilizer due to the less light levels.

This is due to the fact that certain orchid species like Dendrobiumexperience an oscillation of temperature throughout all of the time in their native habitat and, when exposed to more sunlight and warm temperatures in spring, it is able to use all the resources and energy required to bloom naturally.

Orchids of every species should be watered less frequently at approximately one time every 10 days in the winter months when levels of evaporation and growth are less due to the shorter length of days and do not apply any fertilizers in Winter.

If its Spring, Increase the amount of watering (to about once every seven days) and apply a special orchid fertilizer . The orchid will be able to show larger flowers.

Key Takeaways:

  • The reason orchids arent blooming is typically due to lack of light, temperatures at night are too hot to encourage flowering, or the orchid is too stressed by low humidity to bloom. Orchids require bright indirect light as well as high humidity and cooler temperatures at night to stimulate blooming.
  • Its the variation in temperatures between night and day that causes the orchid to develop new spikes of flowers and show flowers.
  • Moth orchids dont bloom in the same place on a flower spike after theyve flowered. Cut the flower spike to about one-half inch higher than the new growth or back to the bottom of the orchid in case flowers are becoming brown or yellow.
  • Orchids dont bloom in the same way without regular fertilizer because the roots will use up the nutrients available within the medium for potting. Utilize a specific fertilizer for orchids in the spring and summer to make sure that the orchid is getting the nutrients needed for blooming.
  • They are tropical plant species that require about 50 percent humidity. If the humidity of the stems of the roots and flowers is low, the orchid may be too stressed to create flowers.
  • Orchids require a potting medium that is aerated like pine bark, which lets water drain efficiently. When the roots of an orchid are placed in a potting medium that is saturated or soil, the roots will decays, which strains the plant and cause the orchid to not flower.
  • For orchids to begin blooming again, lower the temperature of the night by 10 degrees Fahrenheit for about 2 to 4 weeks. This triggers the development of a new flower spike, which stimulates the blooming. Utilize a special fertilizer for orchids in the spring to supply the necessary nutrients needed to start flowering so that your orchid will bloom once more.
Stephanie

Stephanie

Went from an inexperienced gardener to a half-decent one over 10+ years. I cover anything from general indoor plant guides and lawn care, to succulents and flowers. Super happy to share my tips and tricks with you :)