Orchidaceae
Cow Horn Orchid (Myrmecophila tibicinis)
Myrmecophila tibicinis
Grow mounted on cork bark or driftwood, or in a wooden slatted basket with coarse bark. Requires bright to full sun, excellent air circulation, and complete drying between waterings. Fertilize every two weeks during active growth with a balanced orchid fertilizer.
Every 10 days
Direct sun
18° - 35°C
60% - 80%
Categories
What is Cow Horn Orchid?
Cow Horn Orchid (Myrmecophila tibicinis) is a medium-care plant from the Orchidaceae family. Myrmecophila tibicinis is a large epiphytic orchid native to seasonally dry tropical forests from Mexico through northern South America. Its hollow, cylindrical pseudobulbs — up to 45 cm tall — are colonized by ants in the wild in a mutualistic relationship that provides extra nutrients to the plant...
Cow Horn Orchid grows up to 1.5m, with spread of 90cm, watering every 10 days, 18°C – 35°C, 60–80% humidity. It is not suitable for indoor environments and safe for pets.
Unlike many popular species, Cow Horn Orchid is safe to keep around pets.
How to Care for Cow Horn Orchid?
TLDR: Cow Horn Orchid needs Direct sun, watering every 10 days, and temperatures between 18-35°C with 60-80% humidity.
How Often Should You Water Cow Horn Orchid?
Water thoroughly every 7–10 days, allowing roots and medium to dry completely before the next watering. Reduce frequency in winter. Never allow roots to sit in standing water — root rot is the main risk.
How Much Light Does Cow Horn Orchid Need?
Requires bright to full sun (25,000–50,000 lux), ideally 8–10 hours daily. Outdoors with light midday shade is ideal. Indoors, place at the brightest south or west window available.
What Is the Best Soil for Cow Horn Orchid?
Mount on cork slab or driftwood, or grow in a slatted wooden basket with charcoal and coarse coconut husk. Roots need maximum aeration — avoid compact media entirely.
What Pot Should You Use for Cow Horn Orchid?
Slatted wooden or wire basket with charcoal and coarse bark; cork slab or driftwood for epiphytic mounting
Care Schedule
Fertilize
Every 21 days
Repot
Every 730 days
What Is Cow Horn Orchid and Where Does It Come From?
Myrmecophila tibicinis is a large epiphytic orchid native to seasonally dry tropical forests from Mexico through northern South America. Its hollow, cylindrical pseudobulbs — up to 45 cm tall — are colonized by ants in the wild in a mutualistic relationship that provides extra nutrients to the plant. Flowers are spectacular: magenta sepals and petals with bronze-orange tips, a large white lip with intense magenta veining, and a bright yellow central callus. The flower spike can exceed 1.5 m and bear up to 15 blooms.
How to Propagate Cow Horn Orchid?
Rhizome Division
Divide only well-established plants with many pseudobulbs. Always sterilize cutting tools to prevent disease transmission.
- 1 Remove plant from mount or basket
- 2 Identify divisions with at least 3 pseudobulbs and healthy roots
- 3 Cut with a sterilized knife
- 4 Dust cut surfaces with powdered fungicide
- 5 Mount each division on new cork or basket
- 6 Keep lightly moist for 2 weeks to encourage new root establishment
Materials needed:
How Big Does Cow Horn Orchid Grow?
TLDR: Cow Horn Orchid can reach up to 1.5m tall with Slow growth rate.
Max height
1.5m
Spread
90cm
Growth rate
Slow
Foliage
Evergreen
Plant Uses
Ornamental
Great for decoration
Is your plant showing symptoms?
Click on the symptom to discover possible causes:
What Diseases Commonly Affect Cow Horn Orchid?
TLDR: Cow Horn Orchid is susceptible to 9 known diseases. Monitor regularly for early detection.
Scale Insects
Scale insects are small sap-sucking pests that appear as brown, shell-like bumps on plant stems and leaves. There are over 25 species, divided into armored (hard) and unarmored (soft) scales. They feed by piercing plant tissue and extracting sap, which weakens the plant and can lead to yellowing, stunted growth, and even death if left untreated. They also excrete honeydew, which attracts ants and promotes sooty mold growth.
Spider Mites
Spider mites are tiny arachnids (less than 1/20 inch long) related to spiders and ticks that feed on plant sap. They thrive in hot, dry conditions and can cause significant damage to ornamental and vegetable plants. During severe infestations, crop losses can reach 14% or higher as these pests disrupt vital plant processes including photosynthesis, carbon dioxide absorption, and transpiration.
Mealybugs
Mealybugs are small, soft-bodied insects covered with a white, waxy, cottony material. They are common pests of houseplants and outdoor plants in mild climates. These sap-sucking insects feed on plant tissue, causing damage, stunted growth, and can lead to plant death if left untreated. They produce sticky honeydew which attracts sooty mold.
Root Rot
Root rot is a serious fungal disease that affects the root system of plants, causing them to decay and die. It is primarily caused by overwatering, poor drainage, or soil-borne fungi such as Pythium, Phytophthora, Rhizoctonia, and Fusarium. The disease thrives in waterlogged conditions where roots are deprived of oxygen, making them susceptible to fungal infection.
Meaning & Symbolism
Symbolizes tropical resilience and inter-species harmony — its mutualistic symbiosis with ants is a remarkable example of cooperation in nature.
Fun Facts
In the wild, ants colonize its hollow pseudobulbs — their debris provides extra nutrients to the orchid in a true mutualism
Its flower spikes can exceed 1.5 m and carry up to 15 fragrant blooms
One of the largest epiphytic orchids in the Americas, with pseudobulbs reaching 45 cm in height
First described in 1838 by Bateman as Epidendrum tibicinis — the species name means 'flute player'
Frequently asked questions
How often should I water the Cow Horn Orchid?
What is the best location for Myrmecophila tibicinis?
Why is my orchid not flowering?
Do I need a special growing medium?
Is Cow Horn Orchid suitable for indoors?
Compare with similar plants
| Attribute | Difficulty | Light | Watering | Pet Safe |
|---|---|---|---|---|
| Flamingo Flower | Medium | Partial shade | 5d | ⚠️ |
| Prayer Plant | Medium | Partial shade | 3d | ✓ |
| Moon Orchid | Easy | Partial shade | 7d | ✓ |
| Boston Fern | Medium | Partial shade | 3d | ✓ |
