Calypso Orchids Taxonomy
- Kingdom: Plantae (Plants)
- Phylum: Angiosperms (Angiosperms are flowering plants.)
- Class: Monocots (Monocots are a class of angiosperms characterized by having one seed leaf.)
- Order: Asparagales (Asparagales is the order of flowering plants to which Calypso Orchids belong.)
- Family: Orchidaceae (Orchidaceae is the family of orchids, which includes a wide variety of species.)
- Genus: Calypso (Calypso is the genus to which these orchids belong.)
- Species: Various (There are several species within the Calypso genus, each with its own unique characteristics.)
Understanding the Calypso Orchid: A Brief Overview
Calypso orchids, also known as fairy slippers, are enchanting flowers that capture the hearts of plant lovers around the world. These delicate and dainty orchids belong to the genus Calypso, which comprises several species. Native to temperate regions, calypso orchids can be found in North America, Europe, and Asia.
One of the most distinctive features of calypso orchids is their unique coloration. These exquisite flowers come in various shades of pink, purple, and sometimes even white. The petals often display intricate patterns and markings, adding to their allure. The calypso orchid is known for its beauty and grace, earning it a special place in the hearts of both experienced gardeners and casual enthusiasts.
Despite their captivating appearance, calypso orchids are relatively small in size, with each flower typically measuring only a few centimeters in diameter. However, what they lack in size, they make up for in elegance. Their petite structure and delicate details make them an eye-catching addition to any garden or floral arrangement.
Calypso orchids are often found in shaded woodland areas, where they flourish in the damp and cool environment. Their natural habitat includes mossy forests, mountain slopes, and meadows, creating a picturesque scene when in bloom. These orchids have evolved to thrive in these particular conditions, making them a fascinating subject for study and cultivation.
In the following sections of this article, we will delve deeper into the world of calypso orchids, exploring different types, ideal growing conditions, propagation methods, common pests and diseases, and much more. By understanding the intricacies of these captivating orchids, you can enhance your gardening skills and cultivate these enchanting flowers with success. So, let us embark on this journey of discovery and unlock the secrets of the calypso orchid together.
Exploring the Different Types of Calypso Orchids
Calypso orchids, also known as fairy slipper orchids, are a diverse group of orchids that captivate with their beauty and charm. These petite flowers are native to regions across North America, Europe, and Asia, each boasting its own unique characteristics.
One of the most common types is the Calypso bulbosa, which features vibrant pink petals with darker spots or stripes. This species is found in alpine meadows and woodland areas, making it a popular choice for outdoor gardens.
Another variety, the Calypso reginae, showcases delicate lavender or purple flowers, often attracting hummingbirds and butterflies. These orchids prefer the cool and moisture-rich environments found in wetlands and bogs. Lastly, the Calypso borealis is a stunning orchid that boasts white, pink, or lavender petals, creating a subtle elegance in shaded forests and mossy thickets.
Each type of Calypso orchid has its own unique characteristics and preferred habitat, making them a truly diverse and fascinating group of flowers. In the next sections, we will dive deeper into understanding the ideal growing conditions, propagation methods, and tips for encouraging blooming in these captivating orchids.
The Ideal Growing Conditions for Calypso Orchids
Calypso orchids, with their delicate beauty and vibrant colors, require specific growing conditions to thrive. Creating the ideal environment for these stunning flowers can be achieved by considering factors such as temperature, humidity, and light.
Temperature plays a crucial role in the growth and development of calypso orchids. These plants prefer cooler temperatures, typically ranging between 60-75 degrees Fahrenheit (15-24 degrees Celsius) during the day and slightly cooler at night.
However, they can tolerate higher temperatures during the summer months if adequate moisture and shade are provided. It is important to note that extreme temperature fluctuations can hinder their growth, so maintaining a stable climate is essential.
In addition to temperature, humidity also plays a significant role in the well-being of calypso orchids. These plants thrive in environments with high humidity levels, around 50-70%. To increase humidity, placing the orchids on trays filled with water or using a humidifier in the growing area can be beneficial. Proper ventilation is also crucial to prevent the development of fungal diseases caused by excessive moisture.
When it comes to light, calypso orchids prefer filtered or indirect sunlight. They flourish in shady areas such as beneath trees or on the eastern or northeastern side of the house where they receive gentle morning sunlight. Too much direct sunlight can scorch their delicate petals and leaves. It is important to strike a balance between providing enough light for photosynthesis and protecting them from harsh sunlight.
Creating the ideal growing conditions for calypso orchids ensures their health and promotes optimal growth and blooming. By understanding their temperature preferences, maintaining appropriate humidity levels, and providing filtered sunlight, gardeners can successfully cultivate these stunning orchids and witness their captivating beauty in full bloom.
Choosing the Right Soil for Calypso Orchids
When it comes to growing Calypso orchids, choosing the right soil is crucial for their overall health and flourishing growth. These delicate beauties thrive in a specific type of soil that provides the perfect balance of moisture retention and drainage. The ideal soil for Calypso orchids is rich in organic matter, well-aerated, and slightly acidic.
To create the perfect soil mix for your Calypso orchids, start with a base of high-quality orchid potting mix. This mix usually consists of ingredients like bark chips, sphagnum moss, and perlite, which provide excellent drainage and aeration. Then, to enhance moisture retention, add a small amount of peat moss or coconut coir to the mix. These organic materials help retain water without becoming overly soggy.
It’s important to note that Calypso orchids are sensitive to alkaline soil, so avoid using regular potting soil or soil mixes that contain lime. The alkalinity in these types of soils can hinder nutrient uptake and lead to poor growth. Instead, stick to orchid-specific soil mixes or create your own mix with the ingredients mentioned above. This will ensure that your Calypso orchids have the right environment to thrive and bloom magnificently.
Watering Techniques for Healthy Calypso Orchids
One of the most crucial aspects of caring for calypso orchids is getting the watering techniques just right. These unique and enchanting flowers have specific requirements when it comes to moisture, and by understanding their needs, you can ensure their optimal health and blooming.
Overwatering can lead to root rot and other issues, while under-watering can cause the orchids to wither and dry out. So, how do you strike the perfect balance?
First and foremost, it’s essential to water calypso orchids sparingly. These plants prefer a moist, but not wet, environment. A good watering technique is to wait until the top inch of soil feels dry before giving them a good drink. Pour water over the soil slowly, making sure it is evenly distributed.
Be careful not to let water accumulate in the crown of the plant, as this can lead to disease and rot. As a general rule, it’s better to underwater than to overwater. Remember, calypso orchids are hardy and can withstand short periods of drought, so a little neglect won’t harm them.
Providing the Right Amount of Sunlight for Calypso Orchids
Calypso orchids are a stunning addition to any garden or indoor space, but to ensure their optimal growth and blooming, it is crucial to provide them with the right amount of sunlight. These delicate flowers thrive in filtered or dappled light, which replicates their natural habitat in the understory of forests.
While they do require some amount of sunlight, direct exposure to harsh rays can cause damage to their sensitive petals, resulting in burnt or wilting flowers.
One way to provide the perfect balance of sunlight is by placing the orchids near a north or east-facing window. These locations provide gentle morning or evening light that is not too harsh. If you notice that the leaves are turning yellow or developing brown spots, it may be a sign that the orchids are receiving too much direct sunlight.
In such cases, it is advisable to move them to a less sunny spot or provide shade using sheer curtains or blinds. Additionally, rotating the pots every few days ensures that all sides of the plants receive equal exposure to light, promoting even growth and blooming.
With the right amount of sunlight, calypso orchids can flourish and produce vibrant blossoms that are sure to captivate anyone who lays eyes on them. However, it is essential to monitor their response to sunlight and make adjustments accordingly, ensuring their continued health and beauty.
Propagation Methods for Calypso Orchids
Calypso orchids, with their vibrant colors and unique beauty, are a popular choice among gardening enthusiasts. While purchasing fully grown plants is one option, many people also enjoy propagating Calypso orchids from seeds. This process allows you to nurture the plants from their earliest stages and witness their growth firsthand.
To propagate Calypso orchids from seeds, you’ll need to gather fresh seeds from mature plants. Once collected, these seeds require a specific stratification process to simulate natural conditions and encourage germination. This involves placing the seeds in a moist medium, such as sphagnum moss or vermiculite, and refrigerating them for a period of several weeks. This cold treatment triggers the necessary biochemical changes within the seeds, preparing them for growth.
After the stratification period, it’s time to sow the seeds. Prepare a well-draining potting mix by combining peat moss, perlite, and orchid bark. Fill small pots or trays with this mixture, leaving some space at the top.
Gently press a few seeds onto the surface, making sure they are in good contact with the potting mix. Lightly mist the seeds with water, being careful not to soak them. Finally, cover the container with a transparent lid or plastic wrap to create a mini greenhouse effect, promoting germination. Place the container in a warm and bright location, away from direct sunlight.
In a few weeks, you should start to see tiny green shoots emerging from the seeds. At this point, it’s important to carefully monitor the moisture levels in the container. Avoid overwatering, as excessive dampness can lead to mold or fungal growth. Instead, water lightly and only when the top layer of the potting mix feels dry to the touch. As the seedlings grow, gradually remove the cover and provide them with gentle air circulation.
Propagation from seeds can be a rewarding experience, but it requires patience and attention to detail. Keep in mind that not all seeds will germinate successfully, so expect some variability in the number of plants obtained from a batch of seeds. However, with care and perseverance, you can enjoy the satisfaction of nurturing Calypso orchids from their very beginnings and watching them flourish into stunning plants.
Common Pests and Diseases that Affect Calypso Orchids
When it comes to growing Calypso orchids, it’s important to be aware of the common pests and diseases that can affect these delicate plants. Like any other living organism, orchids are not immune to the challenges posed by unwanted visitors and health issues. Here are some of the most common pests and diseases that you may encounter while caring for your Calypso orchids.
1. Spider Mites: These tiny pests can wreak havoc on your Calypso orchids. They feed on the plant’s sap, causing the leaves to appear speckled or discolored. You may also notice fine webbing on the foliage. To combat spider mites, try using insecticidal soap or neem oil. Regularly inspect the undersides of leaves and isolate any affected plants to prevent the infestation from spreading.
2. Aphids: Aphids are another annoying pest that can infest Calypso orchids. These small, soft-bodied insects prefer to attack tender new growth, causing curling or distortion of the leaves. They can also transmit viral diseases. To get rid of aphids, you can try spraying the plant with a mixture of soapy water or using insecticidal sprays specifically formulated for orchids.
3. Fungal Diseases: Calypso orchids can be susceptible to fungal diseases, such as root rot and leaf spot. These problems often arise due to improper watering or high humidity levels. It’s crucial to ensure good drainage and avoid overwatering your orchids.
If you notice any signs of fungal disease, such as brown spots or wilting leaves, remove the affected areas and apply a fungicide to prevent further spread.
Effective Ways to Prevent and Treat Orchid Pests and Diseases
Orchids are known for their beauty and elegance, but they can also be prone to various pests and diseases that can take a toll on their health. It’s important for orchid enthusiasts to take proactive steps to prevent and treat these issues to ensure the longevity and vitality of their plants.
One of the most effective ways to prevent pests and diseases is to maintain a clean growing environment. Regularly clean and sanitize your pots, tools, and any other equipment used for your orchids.
This helps eliminate any potential breeding grounds for pests and reduces the likelihood of diseases spreading. Additionally, make sure to remove any dead or decaying plant matter from your orchids, as this can attract pests and harbor pathogens.
Another important aspect of preventing pests and diseases is to carefully inspect your orchids on a regular basis. Look out for any signs of infestation, such as chewed leaves, sticky residue, or the presence of insects.
If you notice any issues, take immediate action to identify and treat the problem. This may involve using organic pest control methods, such as neem oil or insecticidal soap, or seeking professional advice if the infestation is severe. Regularly monitoring your orchids allows you to catch any problems early on and address them before they escalate.
In addition to prevention, it’s crucial to be familiar with common orchid pests and diseases and their treatments. Some common pests that can affect orchids include aphids, mealybugs, spider mites, and scale insects.
Diseases like fungal infections, bacterial rot, and viral diseases can also pose a threat to orchids. Research and educate yourself about the specific pests and diseases that your orchids are susceptible to, so you can be prepared to deal with them effectively.
While prevention and early intervention are key, it’s also important to remember that orchids, like any living organism, can still fall ill despite our best efforts. If you find that your orchid is already infested or showing signs of disease, it’s important to take immediate action to minimize further damage. This may involve isolating the affected plant, treating it with appropriate remedies, or seeking professional assistance if necessary.
Pruning and Dividing Calypso Orchids for Optimal Growth
Pruning and dividing calypso orchids play crucial roles in ensuring their optimal growth and health. Regular pruning helps to maintain the plant’s shape and promote new growth, while dividing allows for the expansion of the orchid collection and prevents overcrowding.
When it comes to pruning calypso orchids, it is essential to remove any dead or yellowing leaves or stems. Using a clean, sharp pair of scissors or pruning shears, carefully cut these damaged parts as close to the base as possible. This not only improves the overall appearance of the plant but also prevents the spread of diseases.
Dividing calypso orchids is typically done when the plant has become too large for its current pot or when its clump of bulbs has formed multiple growth points. The process involves carefully removing the orchid from its pot and gently teasing apart the bulbs, ensuring that each division has a sufficient number of healthy roots and new growth.
These divisions can then be potted individually in well-draining orchid mix, providing them with the space they need to thrive and ensuring better air circulation around the roots.
Regular pruning and dividing are essential maintenance tasks for calypso orchids, promoting optimal growth and ensuring the plants’ overall health and vigor.
Fertilizing Calypso Orchids: Dos and Don’ts
When it comes to fertilizing your Calypso orchids, there are a few important dos and don’ts to keep in mind. These beautiful plants require the right nutrients to thrive, but it’s essential to provide them in the correct manner to avoid harming the delicate root system.
Dos:
1. Use a balanced orchid fertilizer: Calypso orchids benefit from a fertilizer specifically formulated for orchids. Look for a balanced blend that contains equal amounts of nitrogen, phosphorus, and potassium – represented by the N-P-K ratio on the fertilizer label. This will provide the necessary nutrients for healthy growth and vibrant blooms.
2. Follow the manufacturer’s instructions: Each fertilizer will have specific instructions for use, including dilution ratios and frequency of application. It’s crucial to follow these guidelines to prevent over or under-fertilization, which can lead to damage or stunted growth.
3. Apply fertilizer during active growth: Calypso orchids go through periods of active growth, typically during the spring and summer months. This is the ideal time to apply fertilizer, as the plants will be better equipped to absorb and utilize the nutrients.
Don’ts:
1. Over-fertilize: More is not always better when it comes to fertilizing orchids. Over-fertilization can cause salt buildup in the soil, leading to root burn and other issues. Follow the recommended dosage on the fertilizer label and resist the temptation to add more.
2. Fertilize when the plants are dormant: Calypso orchids have a natural rest period where growth slows down. During this time, it’s best to avoid fertilizing as the plants will not be actively taking up nutrients. Instead, focus on providing them with the necessary water and light to support their dormancy.
3. Use regular houseplant fertilizers: Calypso orchids have specific nutrient requirements, and using regular houseplant fertilizers may not provide the ideal balance. Stick to fertilizers formulated for orchids to ensure your plants receive the proper nutrition they need.
Understanding the Blooming Cycle of Calypso Orchids
Calypso orchids, also known as fairy slipper orchids, are renowned for their captivating beauty when in full bloom. However, to truly appreciate their splendor, it is essential to understand their unique blooming cycle. The blooming cycle of calypso orchids can be divided into three distinct stages: dormancy, growth, and flowering.
During the dormancy stage, typically occurring during the winter months, calypso orchids enter a period of rest. They conserve their energy and redirect their focus inward, preparing for the growth and blooming phase. As the days grow longer and temperatures gradually rise, these magnificent plants slowly awaken from their slumber.
Once the dormancy stage concludes, calypso orchids transition into the growth stage. During this phase, they develop new leaves and begin to establish a robust root system. It is crucial to provide ample moisture and nutrients during this period to support healthy growth.
As the plant flourishes, the anticipation for the blooming stage builds, igniting excitement among orchid enthusiasts. Stay tuned for the next section as we explore the enchanting process of calypso orchids flowering.
Tips for Encouraging Blooming in Calypso Orchids
Calypso orchids are known for their stunning blooms, and if you want to enjoy a vibrant display of colors in your garden, here are some tips for encouraging blooming in Calypso orchids.
1. Provide Adequate Light: Calypso orchids thrive in bright, indirect light. Place them near a window where they can receive filtered sunlight or in a location where they can benefit from dappled shade. Avoid placing them in direct sunlight as it can scorch their delicate leaves and flowers.
2. Maintain Optimal Temperature: Calypso orchids prefer cool growing conditions. Keep the temperature between 60 to 70 degrees Fahrenheit during the day and slightly cooler at night. Avoid exposing them to extreme temperature fluctuations as it can hinder blooming.
3. Water Consistently: Calypso orchids require consistent moisture to bloom. Water them thoroughly when the top inch of the potting mix feels dry. Ensure that the water drains well to prevent the roots from sitting in water, which can lead to root rot.
4. Use a Well-Draining Potting Mix: Calypso orchids prefer a well-draining potting mix that allows for good air circulation around their roots. Choose a mix specifically formulated for orchids or make your own by combining bark, sphagnum moss, and perlite.
5. Fertilize Properly: Calypso orchids benefit from a balanced orchid fertilizer during the active growing season. Apply the fertilizer at half-strength every two weeks to provide the necessary nutrients for blooming. Avoid overfertilizing, as it can result in excessive foliage growth at the expense of flowers.
Repotting Calypso Orchids: When and How to Do It
Calypso orchids are stunningly beautiful and delicate plants that require proper care and maintenance to thrive. One important aspect of caring for these gorgeous flowers is knowing when and how to repot them. Repotting is a crucial step in ensuring the health and longevity of your calypso orchids.
So, when should you consider repotting your calypso orchids? The general rule of thumb is to repot them every two to three years or when you notice that the pot has become too crowded with roots. It’s important to give your orchids enough space to grow and expand their root systems. Additionally, if you notice that the soil is no longer retaining moisture properly or has become compacted, it may be time to repot.
When it comes to how to repot your calypso orchids, there are a few key steps to follow. First, you’ll want to carefully remove the orchid from its current pot, taking care not to damage the delicate roots. Gently loosen the soil around the roots to make it easier to remove.
Next, inspect the roots for any signs of rot or disease. If you notice any issues, such as mushy or discolored roots, it may be necessary to trim them off before repotting. Once the roots are healthy and clean, choose a new pot that is slightly larger than the previous one to allow for future growth.
Fill the pot with a suitable orchid potting mix, ensuring that it is well-draining and provides adequate moisture retention.
Carefully place the orchid in the new pot, making sure that the roots are spread out evenly. Gently fill in any gaps with additional potting mix, being careful not to pack it too tightly. Finally, give the orchid a thorough watering and place it in a position with the appropriate light and temperature conditions for optimal growth.
Troubleshooting Common Issues with Calypso Orchids
Calypso orchids are beautiful and delicate flowers that bring a touch of elegance to any garden. However, like any plant, they can encounter some issues that may hinder their growth and blooming. Luckily, most of these problems can be easily identified and resolved with a little knowledge and care.
One common issue that Calypso orchids may face is root rot. This occurs when the roots are constantly wet and not given enough time to dry out between waterings.
To prevent this, ensure that the orchid is planted in well-draining soil and never over-water it. If root rot has already set in, remove the affected roots and cut away any infected tissue before repotting the orchid in fresh soil.
Another problem that may occur is yellowing or wilting leaves. This can be a sign of over or under-watering, nutrient deficiencies, or even pests. To troubleshoot this issue, examine the watering routine and adjust it accordingly, making sure not to let the soil become too dry or waterlogged.
Additionally, consider providing the orchid with a balanced orchid fertilizer to replenish any missing nutrients. If pests are detected, such as aphids or spider mites, treat them using natural insecticides or neem oil.
FAQS
How do I choose the right type of Calypso Orchid for my garden?
When selecting a Calypso Orchid, consider factors such as your climate, available growing conditions, and personal preferences. Some popular types include the Calypso Bulbosa and Calypso ‘Fairy Slipper’, known for their vibrant colors and delicate blooms.
What are the ideal growing conditions for Calypso Orchids?
Calypso Orchids thrive in cool, moist environments with filtered or dappled sunlight. They prefer well-draining soil and temperatures ranging from 50 to 70 degrees Fahrenheit.
What kind of soil should I use for my Calypso Orchids?
A well-draining potting mix that retains some moisture is best for Calypso Orchids. A mixture of peat moss, perlite, and orchid bark can provide the necessary drainage and moisture retention.
How often should I water my Calypso Orchids?
Calypso Orchids should be watered when the top inch of soil feels dry to the touch. It’s important to avoid overwatering, as this can cause root rot. Aim to keep the soil evenly moist, but not waterlogged.
How much sunlight do Calypso Orchids need?
Calypso Orchids prefer bright, indirect light. They do well in filtered or dappled sunlight, such as that provided by a sheer curtain or under the shade of a tree.
How can I propagate Calypso Orchids?
Calypso Orchids can be propagated through division or by collecting and sowing their seeds. Dividing established plants is a common method, ensuring each divided section has sufficient roots to encourage successful growth.
What pests and diseases commonly affect Calypso Orchids?
Common pests include aphids, spider mites, and slugs, while diseases such as root rot and fungal infections can also impact Calypso Orchids.
How can I prevent and treat pests and diseases in my Calypso Orchids?
Regularly inspect your Calypso Orchids for signs of pests or diseases. To prevent them, maintain proper sanitation, provide adequate airflow, and avoid overwatering. When necessary, treat pests with insecticidal soap or natural pest control methods, and address diseases with appropriate fungicides.
When and how should I prune and divide my Calypso Orchids?
Pruning and dividing should be done during the dormant period, typically in late fall or early winter. Use sterile pruning tools to remove dead or damaged foliage, and carefully divide the plant, ensuring each division has healthy roots and shoots.
What are the dos and don’ts of fertilizing Calypso Orchids?
Do fertilize Calypso Orchids during their active growth period, using a balanced orchid fertilizer. Don’t over-fertilize, as this can lead to salt buildup and damage the roots. Follow the instructions on the fertilizer package and adjust based on the specific needs of your orchids.
How long is the blooming cycle of Calypso Orchids?
The blooming cycle of Calypso Orchids can vary, but it typically lasts for about 2 to 4 weeks. When the flowers start to wither, they can be removed to encourage future blooms.
How can I encourage blooming in my Calypso Orchids?
To encourage blooming, provide the Calypso Orchids with ideal growing conditions, including the right amount of sunlight, proper watering, and regular fertilization. Additionally, ensure they go through a sufficient dormant period to promote flower production.
When and how should I repot my Calypso Orchids?
Calypso Orchids should be repotted every 1 to 2 years, preferably after the blooming cycle is complete. Choose a slightly larger pot and use a well-draining orchid potting mix. Gently remove the orchid from its current pot, trim any dead roots, and place it in the new pot, filling in with fresh potting mix.
Why are my Calypso Orchid leaves turning yellow?
Yellowing leaves in Calypso Orchids can indicate various issues, such as overwatering, underwatering, nutrient deficiencies, or pests. Assess the watering routine, check for pests, and ensure the plant is receiving adequate light and nutrients.
What should I do if my Calypso Orchid’s roots are rotting?
If you notice root rot in your Calypso Orchid, remove the affected roots using sterile pruning shears. Allow the plant to dry out slightly before adjusting the watering routine. Repot the orchid in fresh, well-draining potting mix and provide adequate airflow to prevent future rotting.
Why are my Calypso Orchid flowers dropping prematurely?
Premature flower dropping in Calypso Orchids can be caused by improper watering, extreme temperatures, insufficient light, or stress. Ensure you are providing the orchid with the right conditions and maintain consistent care to prevent flower drop.
Can Calypso Orchids be grown indoors?
Yes, Calypso Orchids can be grown indoors if the right growing conditions are met. Provide them with bright, indirect light, appropriate humidity levels, and proper watering and fertilization. Ensure good airflow around the plant to prevent stagnant conditions.
Can I grow Calypso Orchids in a terrarium?
While Calypso Orchids prefer cool and moist conditions, growing them in a terrarium can create excessively humid and stagnant conditions, increasing the risk of fungal diseases. It’s generally recommended to grow Calypso Orchids in a well-ventilated area instead.
How long does it take for Calypso Orchids to bloom after repotting?
Calypso Orchids may take a few months to bloom after repotting. This is because they need time to establish their roots and adjust to the new potting mix. Be patient and continue providing proper care, and blooms should appear in due time.
Can I use tap water to water my Calypso Orchids?
It is best to avoid using tap water for Calypso Orchids, as it can contain high levels of minerals and chemicals that can harm the orchid. Instead, use filtered, distilled, or rainwater if possible. If tap water is the only option, allow it to sit overnight to allow chlorine and other chemicals to dissipate before using it to water your orchid.
