Hai Yen Orchid - Techniques for growing and caring for orchids to bloom in season

Hai Yen orchid​ is one of the wild orchid species with elegant beauty, gentle color and light fragrance, usually blooming in late spring.

Hai Yen orchid is an orchid species with elegant beauty and a cool, pleasant fragrance that is increasingly popular in the Vietnamese orchid world. With good adaptability and regular flowering, Rhynchostylis coelestis is always a perfect choice for those who want to collect beautiful and special orchids.

In today's article, let's learn in detail about the origin, characteristics and techniques for properly growing Hai Yen orchids to help the orchid grow well, bloom beautifully and in season .

Overview of Hai Yen orchid

Dendrobium orchid is a common orchid species in Southeast Asia.

Rhynchostylis coelestis, a native orchid species of Southeast Asia, is common in the following countries:

• Thailand : The place with the most diverse Hai Yen orchid population, creating many beautiful and unique variations.
• Vietnam : Usually found in the Central and South Central provinces such as Dak Lak, Lam Dong, Binh Phuoc, quite rare in nature.
• Laos, Cambodia, Myanmar: Lan Hai Yen is scattered in lowland forest areas.

Hai Yen orchid is an epiphytic species that lives on large trees in primary forests, where there is high humidity all year round, prefers diffused light and cannot tolerate harsh sunlight.

The name “coelestis” in Latin means “sky blue” and refers to the most common flower color of the Hai Yen orchid.

How to identify Hai Yen orchid

Close-up of a Hai Yen orchid with soft, beautiful petals.

Below are detailed characteristics of the appearance and biological characteristics of Hai Yen orchids. Please learn more to know how to distinguish Hai Yen orchids among thousands of other orchid species.

Flower :

• Grows in clusters, upright, 10 - 30 cm long, each cluster has 20 - 40 small flowers.
• Flowers are about 2.5 - 3 cm in size, light purple, white or purple spotted.
• Light, sweet fragrance, most evident in the early morning.
• Flowers bloom for 2 - 4 weeks, usually blooming in February - April of the solar calendar.

Stem & leaves:

• Short stem, grows straight or slightly inclined, 30 - 50 cm long
• Leaves are 15 - 25 cm long, curved, soft, with longitudinal grooves in the middle.
• Young leaves are light green, older leaves are darker.

Roots :

• Large, strong roots, wind-like, covered with a silvery white shell on the outside.
• When exposed to water, the roots turn green.

Biological characteristics :

• This is a type of orchid that likes good ventilation and cannot tolerate waterlogging.
• Slow growing but hardy.
• Don't like to change planting location many times, so if you have planted it, you should fix it in one place.

Techniques for planting and caring for Hai Yen orchids to bloom in season

Detailed techniques for growing Hai Yen orchids.

To help Hai Yen orchid grow well and bloom beautifully in season, you need to pay attention to the following basic techniques.

Selecting and processing Hai Yen orchid varieties

The first step in growing Hai Yen orchids is to select and pre-treat the seeds so that the plant can quickly adapt and take root well. Do the following.

• Choose seedlings with healthy roots, 3-5 leaves, no spots or burnt leaves, and no waterlogged stems.
• Cut off waterlogged branches, damaged or yellow leaves, and crushed stems.
• Soak Hai Yen orchid in Physan 20 solution with dosage of 1ml/1 liter of water for 10 - 15 minutes to prevent fungus.
• Then take it out, soak it in a root stimulant solution and leave the orchid in a cool place for 1 day before planting or grafting.

Dendrobium orchid growing techniques

To plant the orchid in a pot, follow the instructions below to avoid planting incorrectly, causing the plant to grow slowly and not grow new roots.

• Step 1: Soak the growing medium such as wood, coconut fiber, pine bark, and coal in lime water for 1 hour to disinfect. If using a terracotta pot, you need to create drainage holes.
• Step 2 : Secure the orchid to the substrate or pot, keep the plant straight because the orchid does not like to be moved much. Note that the leaves should be turned to the east or southeast to receive the most morning light.
• Step 3: Use pine bark and moss to cover the base to keep it moist but still allow air circulation.
• Step 4: Place the plant in a cool, airy place and use a spray bottle to water the plant.

Optimal growing conditions for Hai Yen orchid

Here are the optimal conditions for light, temperature, and humidity to help Hai Yen orchids grow best. Let's find out now.

• Light : Place the plant in a place with 30 - 50% diffused light. It should be planted under a layer of black net on top to block out some of the sunlight.
• Temperature : From 18 - 30 degrees Celsius
• Humidity : 60 - 80%, spray light mist if the weather is dry.
• Planting location : Ventilated place, not stuffy.

Care of Hai Yen orchid

Below are detailed instructions on how to water and fertilize Hai Yen orchids at each specific time and stage.

Watering properly :

• Dry season : Water twice a day in the early morning and cool afternoon.
• Rainy season : Only water when the substrate feels dry.
• Absolutely do not water in the evening because it can easily cause root rot.

Regular fertilization :

• Hai Yen orchid growth stage (May - September): Use diluted NPK 30-10-10 fertilizer at a ratio of 1g/1 liter of water, water once every 10 days.
• Germination stage for Dendrobium orchids (October - December): Use NPK fertilizer 10-30-20 + B1, water every 10 days.
• When the orchid is blooming: Fertilize with NPK 6-30-30 to keep the flower color good and long lasting.
• When the orchid flower fades: Fertilize with organic fertilizer and B1 to help the plant recover.

Technique to stimulate Hai Yen orchid to bloom on time

To help the orchid bloom on time for Tet or from February to April, don't miss the following tips.

Natural flower stimulation :

• From late October to early November, start reducing watering and increasing light intensity.
• Use NPK 10-30-20 and 6-30-30 fertilizers alternately.
• When you see flower buds appear, start watering normally again.

Flower stimulation with medicine (For Thai Hai Yen orchid line):

• Use specialized flower stimulants such as Dekamon 22.43SL, HVP 6-30-30 according to the recommended dosage, spray in the early morning every 10 days, starting from November.
• Absolutely do not apply to wild orchids because it can easily cause flower buds to shrink.

Disease prevention for Hai Yen orchid

Here are some optimal disease prevention measures for Hai Yen orchids. Let's refer to them to proactively help orchids avoid common diseases.

• Prevent root rot and black roots: Cut off the rotten and black roots, disinfect with Physan or Benkona.
• Prevent leaf spots and yellow leaves: Spray Ridomil Gold and Score alternately.
• Prevent mealybugs and red spiders: Use Movento and Cofidor at the lowest dose.

Hai Yen orchid price list

Let's find out the details about the price of Hai Yen orchids according to each line and each different color to see if there is a big difference.

Note :

• The above prices are for reference only as they will vary depending on season, rarity or tree size.
• Genuine wild Hai Yen orchids will always be more expensive than Thai orchids because the flowers are more fragrant.

Questions and answers about Hai Yen orchid?

What month does the orchid usually bloom?

Hai Yen orchids usually bloom in February - April. If you know how to stimulate early flowering, the orchid will bloom in time for Tet.

Is the orchid fragrant?

Wild orchids have a light, cool, pleasant fragrance. However, Thai orchids are often not as fragrant or even have no distinct fragrance.

Is the Hai Yen orchid easy to grow?

Hai Yen orchid is not too easy to grow, but as long as there are airy conditions, diffused light, no waterlogging, and adequate fertilization, the plant can still grow and bloom evenly.

How is the Hai Yen orchid propagated?

Normally, Hai Yen orchids are propagated by separating Keiki - seedlings growing from the mother root or stem. In addition, in professional flower gardens, they will use tissue culture method to serve the needs of large-scale production.

Beautiful Hai Yen orchid pictures

Let's admire the elegant and gentle beauty of the Hai Yen orchid clusters that we share below to understand why this flower can conquer true orchid lovers.

A Hai Yen Binh Thuan orchid pillar with a huge amount of flowers.

A pot of Thai orchid with characteristic blue color.

Dendrobium orchid has a very rare pure white color.

A pot of Dendrobium orchid with a "huge" number of flowers.

Dreamy light purple orchid.

A super beautiful Blue orchid.

The clusters of flowers are upright and have gentle colors.

Thai orchid has a super beautiful light pink color.

Thus, through the article on orchid-vn.com has shared details about Hai Yen orchid - A wild orchid with gentle colors, pleasant fragrance but has great attraction for orchid lovers. Whether you are new to growing orchids or have a lot of experience, Hai Yen orchid is always a great choice and brings many interesting experiences.

Don't forget to visit our Blog section to learn more about other beautiful and popular wild orchids and hybrid orchids.