This orchid species produces one of the largest flowers in its genus, with a remarkable fragrance that attracts flies for pollination. If you are looking for a conversation starter for your greenhouse, the bulbophyllum echinolabium is a top contender. It is not a subtle plant, and it demands attention with its size, shape, and unforgettable scent.
Before you buy one, you need to know what you are getting into. This guide covers the essential care tips, blooming habits, and the unique quirks of this fascinating orchid.
Understanding The Bulbophyllum Echinolabium
This orchid is native to the rainforests of Borneo and Sumatra. It grows as an epiphyte, meaning it clings to tree branches in the wild. The plant itself is not very tall, but the flower spike is something else entirely.
You will find that the growth habit is clumping. It produces pseudobulbs along a creeping rhizome. Each pseudobulb gives rise to a single, large, leathery leaf at the top.
Key Physical Characteristics
Let us break down what makes this plant so special visually. The foliage is a deep, rich green. The pseudobulbs are smooth and slightly flattened, looking a bit like eggs.
- Flower Size: The inflorescence can reach up to 30 centimeters in length.
- Flower Structure: The dorsal sepal is elongated and wavy, often twisting.
- Color: Typically a mix of pale yellow, green, and deep purple or maroon spots.
- Lip (Labellum): This is the “echino” part, meaning spiny. It is covered in small, hair-like projections.
The most striking feature is the sheer length of the flower. It is not a round, flat bloom like a Cattleya. Instead, it looks like a long, fringed tongue that hangs down from the plant. The lateral sepals are fused, creating a single, drooping structure.
Why The Scent Is So Important
You cannot talk about this orchid without discussing the smell. In the orchid world, we call it “fragrant,” but that is a generous term. The scent is designed to mimic rotting meat.
This is a classic example of deceptive pollination. The flower does not offer nectar. It tricks carrion flies into visiting by smelling like their favorite food source. The flies attempt to lay eggs on the flower, and in the process, they pick up and transfer pollen.
What Does It Actually Smell Like?
Most growers describe it as a mix of dead fish and old garbage. It is not a subtle scent. If you have the plant indoors, the smell will permeate the room when it is in bloom.
Here are the times you will notice the smell the most:
- Early morning when the flower first opens.
- On warm, humid days when the scent molecules move faster.
- When you water the plant, as the humidity spike triggers the release.
If you have a greenhouse, this is a non-issue. If you live in an apartment, you might want to move it outside during the bloom period. The smell is not constant, but it is powerful when it appears.
Light Requirements For Healthy Growth
Getting the light right is the most important step for encouraging blooms. These orchids are used to dappled sunlight under the rainforest canopy. They do not want direct, harsh sun.
Think of the light levels you would give a Phalaenopsis, but slightly brighter. You want to avoid burning the leaves. The ideal spot is an east-facing window or a shaded south-facing window.
Signs Of Too Much Or Too Little Light
You can tell if the plant is happy by looking at the leaf color. A healthy leaf is a medium, apple-green color.
- Dark Green Leaves: This means the plant is not getting enough light. It will grow, but it will rarely flower.
- Yellow Or Red Leaves: This is a sign of sunburn or excessive light. Move it to a shadier spot immediately.
- Bleached Spots: These are permanent damage from direct sun exposure.
If you are using artificial lights, aim for about 1500 to 2000 foot-candles. You can achieve this with a standard T5 fluorescent fixture placed about 12 inches above the plant. LED grow lights also work well, but you need to monitor the heat output.
Watering And Humidity Needs
This is not a plant that likes to dry out completely. In its natural habitat, it receives frequent rain showers. You need to replicate that consistency, but you also need to ensure the roots do not rot.
The key is to water just as the media is about to dry out. Do not let it become bone dry. Do not keep it soaking wet either.
Step-By-Step Watering Guide
Follow this simple routine to keep your plant hydrated:
- Check the potting media with your finger. Stick it about an inch deep.
- If it feels slightly damp, wait another day.
- If it feels dry to the touch, water thoroughly.
- Run water through the pot until it drains out the bottom.
- Let all excess water drain away. Never leave the pot sitting in a saucer of water.
Humidity is critical. You want to aim for 60% to 80% relative humidity. In a typical home, this is much lower. You can increase humidity by using a humidifier or placing the pot on a tray of wet pebbles.
Just make sure the bottom of the pot is not touching the water in the tray. That will wick moisture up and cause root rot. The plant needs air movement around the roots as well as moisture in the air.
Potting Media And Repotting
Because this orchid has a creeping rhizome, it does well in a shallow pot or mounted on a slab. If you choose a pot, you need a mix that holds some moisture but still drains fast.
A standard mix of medium-grade bark, perlite, and sphagnum moss works well. The sphagnum moss helps retain a bit of water, while the perlite ensures air pockets.
When To Repot
You should repot every two to three years, or when the media breaks down. Old media becomes soggy and holds too much water, which suffocates the roots.
Here is the process:
- Remove the plant from its pot gently.
- Shake off the old media from the roots.
- Trim away any dead, black, or mushy roots with sterilized scissors.
- Place the plant in the new pot, spreading the rhizome horizontally.
- Fill in with fresh media, ensuring the rhizome is sitting on top, not buried deep.
- Do not water for 3 to 5 days to allow any cut roots to callus over.
Burying the rhizome too deep is a common mistake. It can lead to rot. The rhizome should be exposed to the air, with the roots going down into the media.
Temperature And Air Circulation
This orchid is a warm to intermediate grower. It does not like extreme cold. You should keep it above 60°F (15°C) at night. During the day, temperatures of 75°F to 85°F (24°C to 29°C) are ideal.
Air circulation is more important than you might think. Stagnant air encourages fungal and bacterial infections. It also prevents the flower from developing properly.
Setting Up Airflow
You do not need a hurricane. A gentle, constant breeze is enough. A small oscillating fan placed a few feet away from the plant works perfectly.
- Keep the fan on a low setting.
- Aim it so it blows over the leaves, not directly at the pot.
- Run it for a few hours a day, especially after watering.
Good airflow also helps with temperature control. It prevents hot spots from developing under grow lights. If you notice black spots on the leaves, it is often a sign of poor air movement combined with high humidity.
Fertilizing For Success
You need to feed this plant to get it to bloom. But you have to be careful not to over-fertilize. Orchids are sensitive to salt buildup, which can burn the roots.
Use a balanced fertilizer, like a 20-20-20, at quarter strength. You can also use a specific orchid fertilizer that is already diluted.
Fertilizer Schedule
Follow the “weakly, weekly” method. This means you feed a weak solution every week during the growing season.
- Spring/Summer: Fertilize every other watering.
- Fall/Winter: Reduce to once a month, or stop entirely if temperatures drop.
- Flush Monthly: Once a month, water with plain water to flush out any accumulated salts.
If you notice the leaf tips turning brown or black, you are likely over-fertilizing. Flush the pot thoroughly with clean water to wash away the excess minerals.
How To Encourage Blooming
Getting the bulbophyllum echinolabium to flower is not difficult if you meet its basic needs. The most common reason for failure to bloom is insufficient light. The second is a lack of a dry rest period.
In the wild, this plant experiences a slight dry season. This triggers the blooming cycle. You can replicate this by reducing watering slightly for 4 to 6 weeks in the late winter.
Bloom Cycle Triggers
Here is a checklist to get those massive flowers:
- Provide bright, indirect light (1500+ foot-candles).
- Reduce watering frequency for a month.
- Keep nighttime temperatures slightly cooler (around 60°F).
- Do not move the plant once the spike starts to emerge.
Once the spike appears, it grows quickly. You will see the buds develop at the tip. It takes about a month from spike emergence to full bloom. The flower will last for about 5 to 7 days. It is not a long-lasting bloom, but it is spectacular while it lasts.
Common Pests And Problems
Like all orchids, this one has its share of pests. The most common culprits are scale, mealybugs, and spider mites. Because the leaves are thick, you can often see these pests before they cause major damage.
Identifying Pests
- Scale: Looks like small, brown bumps on the leaves and stems.
- Mealybugs: White, cottony masses in the leaf axils.
- Spider Mites: Fine webbing on the underside of leaves, often with a stippled look.
Treat any infestation immediately. Use a cotton swab dipped in rubbing alcohol to remove visible pests. For a larger infestation, use an insecticidal soap or neem oil spray. Make sure to spray the undersides of the leaves thoroughly.
Root Rot
This is the most common killer. It happens when the media stays too wet. The roots turn black and mushy. If you see this, you need to repot immediately and cut away all the dead roots.
Prevention is better than cure. Always use a well-draining pot. Never let the plant sit in water. When in doubt, wait a day before watering.
Frequently Asked Questions
Here are some common questions that growers have about this specific orchid. I have answered them based on my experience and common horticultural knowledge.
Is The Bulbophyllum Echinolabium Scent Dangerous?
No, the smell is not toxic. It is just unpleasant to human noses. It is designed to attract flies, but it will not harm you or your pets. The scent is simply a strong odor of decay.
How Long Does The Flower Last?
Typically, the flower lasts for about one week. Some growers report it lasting up to ten days if the temperatures are cool. The spike itself will remain on the plant for a while after the flower fades, but it will eventually dry up.
Can I Grow This Orchid In A Terrarium?
Yes, you can, but it is not ideal. The plant gets large, and the flower spike is very long. It will quickly outgrow a standard terrarium. It is better suited to a greenhouse or a large, open windowsill.
Why Are The Leaves Turning Yellow?
Yellow leaves are usually a sign of overwatering or too much direct sun. Check the roots first. If they are healthy, move the plant to a shadier location. If the roots are rotten, you need to repot immediately.
Does It Need A Winter Rest?
Yes, a slight reduction in water during the winter months helps trigger blooming. Do not stop watering entirely, just reduce the frequency. Keep the humidity levels high, but let the media dry out a bit more between waterings.
Final Thoughts On This Unique Orchid
The bulbophyllum echinolabium is not a beginner orchid, but it is a rewarding one. It requires consistent care and a bit of patience. The reward is a flower that is unlike anything else you can grow.
It is a talking point. It is a challenge. And despite the smell, it is a beautiful example of nature’s diversity. If you have the space and the right conditions, this is a plant that will give you years of unique displays.
Just remeber to keep it away from your dinner table when it blooms. The visual spectacle is worth the temporary olfactory assault. Give it the light, water, and air it needs, and it will thrive for you.