Greater Yellowspike Orchid
Polystachya concreta
- Native to:
- Argentina, Bahamas, Bolivia, Brazil, Cayman Is., Colombia, Cuba, Dominican Republic, Ecuador, French Guiana, Guam, Guatemala, Guyana, Haiti, Jamaica, Leeward Is., Mexico, Panamá, Peru, Puerto Rico, Suriname, Trinidad-Tobago, United States, Venezuela, Venezuelan Antilles, Virgin Islands, Windward Is.
Maarten Sepp






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Orchidaceae
- Genus:
- Polystachya
- Species:
- Polystachya concreta
- USDA Symbol:
- POCO27
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 60 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Low
- Bloom Months:
- jan,feb,mar,apr,may,jun,jul,aug,sep,oct,nov,dec
- Bloom Colors:
- yellow, green, purple
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- prefers humid, tropical environments
Propagation & Germination
- Notes:
- Dust seeds require symbiotic mycorrhizal fungi or sterile asymbiotic agar medium for germination; conventional cold stratification is not applicable.