clear pots on Orchid
Quick answer
If your Orchid has clear pots, the most likely cause is: Phalaenopsis orchids have velamen-coated aerial roots that perform photosynthesis — the transparent velamen layer contains chloroplasts that fix CO2 using light captured through the root's epidermal cells, contributing up to 20% of the plant's total carbon fixation in high-light conditions. Clear pots enable this root photosynthesis by allowing ambient light to reach the velamen, whereas opaque containers block this additional photosynthetic tissue from capturing photons.
Start here:
- 1. Use clear plastic pot (polypropylene or polycarbonate) to allow 90%+ light transmission to velamen roots
- 2. Position orchid so aerial roots receive bright indirect light — east-facing windows or filtered south light are optimal
Why Orchid gets clear pots
Phalaenopsis spp.
Phalaenopsis orchids have velamen-coated aerial roots that perform photosynthesis — the transparent velamen layer contains chloroplasts that fix CO2 using light captured through the root's epidermal cells, contributing up to 20% of the plant's total carbon fixation in high-light conditions. Clear pots enable this root photosynthesis by allowing ambient light to reach the velamen, whereas opaque containers block this additional photosynthetic tissue from capturing photons.
How to reverse clear pots on Orchid
- 1
Use clear plastic pot (polypropylene or polycarbonate) to allow 90%+ light transmission to velamen roots
- 2
Position orchid so aerial roots receive bright indirect light — east-facing windows or filtered south light are optimal
- 3
Avoid decorative outer pots that fully encase clear inner pots — use breathable slatted containers or leave clear pot visible
- 4
Green coloring in exposed velamen indicates active photosynthesis — this is healthy, not a problem
- 5
Clear pots also allow monitoring root health (green/plump = healthy, brown/mushy = rot) without disturbing the plant
Keep clear pots off this Orchid
Use clear plastic pots for Phalaenopsis to allow light penetration to roots; position clear pots where roots receive bright indirect light (1000-2000 foot-candles); avoid covering clear pot exteriors with opaque decorative sleeves for more than 2 days consecutively.