Moth orchid care
Phalaenopsis spp. — also called Phalaenopsis, Phal. Everything below is the same data Plantroster uses to schedule care for this species.
Care at a glance
| Light | Bright indirect. Tolerates medium. East window ideal; no hot direct sun. |
|---|---|
| Water | About every 7 days in summer, every 10 in winter. Let the soil dry out completely first. |
| Soil | Orchid bark (no soil) — 8 parts bark, 1 parts charcoal, 1 parts perlite |
| Humidity | At least 50%, happiest near 65% |
| Temperature | 65–80°F. Cold damage below 55°F; heat stress in sun above 95°F. |
| Feeding | Every ~21 days while actively growing. Nothing in winter. |
| Repotting | Every 2 years, or when roots circle the pot |
| Tap water | Tolerates tap water |
| Pets & children | Non-toxic to cats and dogs. |
What people get wrong about moth orchid
Silvery-green roots are thirsty; plump green roots are hydrated. Read the roots, not a calendar.
It will not rebloom without a drop of about 10°F at night for a few weeks in autumn.
Never plant it in regular potting soil — it grows on tree bark in nature and will rot in soil.
Common problems
Watch for mealybugs, scale, spider mites. Check leaf undersides monthly — backlighting a leaf against a window is the fastest way to catch mite webbing before an infestation takes hold.
Plantroster tracks this plant's watering, feeding and repotting cadence against your actual weather — and tells you when a cold night or heatwave means moving it.
Open PlantrosterMoth orchid FAQ
How often should I water a moth orchid?
Roughly every 7 days in the growing season and every 10 days in winter, but treat that as a starting point rather than a rule — light, pot size and your home's warmth all shift it. Water the BARK thoroughly at the sink, then let it drain completely. Never leave water in the crown or the decorative outer pot.
Is moth orchid toxic to cats and dogs?
No. Non-toxic to cats and dogs.
How much light does a moth orchid need?
Bright indirect is ideal, and it will cope with medium. East window ideal; no hot direct sun.
Why does my moth orchid have brown tips?
Moth orchid is not fluoride-sensitive, so brown tips here usually point to inconsistent watering or fertilizer salts built up in old soil. Flush the pot thoroughly and keep to a steadier watering rhythm.
What soil is best for moth orchid?
Orchid bark (no soil): 8 parts bark, 1 parts charcoal, 1 parts perlite. Phalaenopsis are epiphytes. Potting soil suffocates and rots their roots.
Other plant guides
General horticultural guidance, not a substitute for inspecting your own plant. Toxicity notes are a starting point — if a pet or child has eaten part of a plant, contact a vet or poison control rather than relying on this page.