A pleione orchid is a small deciduous orchid grown from a pseudobulb, native to the Himalaya, China, and Taiwan. It loses its leaves every autumn and rests bare through winter. Each spring it sends up a flower before or with a fresh leaf.
Growers sometimes call it orchid pleione. Many keep it as a windowsill orchid instead of in a greenhouse.
What a Pleione Orchid Is
Pleiones are sympodial, so each bulb produces one new growth a year, not a climbing stem.
The genus spans the Himalaya to central China, Indochina, and Taiwan, with roughly two dozen species. Kew’s Plants of the World Online lists 26 accepted species. Native populations also grow in Nepal, Tibet, Bangladesh, and Myanmar.
Unlike Phalaenopsis or Vanda, which keep their leaves year round, a pleione orchid drops its leaf every autumn. It grows a fresh pseudobulb the following spring. That single new growth is where the next flower comes from.
Each pseudobulb stores the energy for the next season’s growth. See our guide to pseudobulbs in orchids for how that storage works across genera.
Many growers in cold winter climates keep Pleione in an unheated greenhouse or a cold frame rather than indoors. A truly cold, dry dormancy is hard to get in a warm house.
Pleione Species and Hybrids
Pleione formosana is the species most home growers start with, sold simply as pleione formosana or the windowsill orchid. Its flowers open pink to white with a fringed lip, often before the leaf appears.
Pleione Tongariro is not a species. It is a hybrid grex, a group of seedlings from the same cross, prized for larger and sturdier flowers.
Other popular hybrids include Pleione Shantung and Pleione Versailles, bred mainly for color and vigor rather than hardiness. Coelogyne is a related genus with similar pseudobulbs but different care needs. See our coelogyne orchid profile for that comparison.
The Pleione Growing Calendar
Pleione orchid care follows the seasons more than a fixed schedule. The table below shows what the plant is doing each month and what to do about it.
| Month | What the plant is doing | What to do |
|---|---|---|
| January | Fully dormant, bare bulbs | Keep cold and dry, near freezing |
| February | Still dormant | Repot bare bulbs into fresh mix |
| March | Flower buds emerge | Move to a bright, cool spot |
| April | Flowers open, leaves start | Water lightly as buds open |
| May | Leaf growth speeds up | Water regularly, feed weakly |
| June | Full leaf, roots active | Feed weekly at quarter strength |
| July | Peak growth | Keep soil moist, never soggy |
| August | New bulb forming under old one | Continue feeding, watch for heat stress |
| September | Growth slows | Cut back watering and feeding |
| October | Leaves yellow | Stop feeding, reduce water further |
| November | Leaf drops | Move to cold storage, stop watering |
| December | Bare and dormant | Keep dry and near freezing |
For the general winter routine, see our guide to orchid care in winter. For what dormancy means across genera, see our dormant orchid guide.
Many general orchid guides suggest an ordinary bright windowsill is enough year round. In practice, a plant without a real cold rest tends to decline within two or three seasons.
How Hardy Is Pleione?
The Rhododendron Species Botanical Garden says Pleione survives outdoors near 5 F (minus 15 C). That only holds true when the bulbs stay dry. Wet cold is what kills them, not cold alone.
Hardiness varies by species and hybrid. Pleione limprichtii is usually named the hardiest, while most hybrids are safer kept just above freezing. Gardeners in colder regions move pots under cover for winter.
This makes a pleione orchid hardier than a Phalaenopsis or a Cattleya. It is still not a plant for open ground in a hard freeze. For other cold tolerant genera, see our hardy orchids guide.
Dendrobium nobile also takes a cold, dry rest, but only down to 50 to 55 F. That rest lasts 4 to 8 weeks. Pleione tolerates temperatures much closer to freezing once fully dormant.
Light and Temperature for Pleione
Give this orchid bright, indirect light rather than direct summer sun, which can scorch the leaf. An east facing windowsill or a lightly shaded cold frame both work well.
During active growth, daytime temperatures of 60 to 75 F suit it best. Cooler nights are fine and even help keep new growth compact.
As flowering finishes, gradually increase light with the lengthening days. Strong light on a full sized leaf builds the reserves for next year’s bulb.
Potting Pleione Bulbs
Repot a pleione orchid in late winter, just before new growth starts. Use a shallow pan rather than a deep pot, since the roots stay near the surface.
A wide, shallow clay or plastic pan works better than a tall pot. Pleiones have a broad, shallow root system. Terra cotta pans also dry a little faster between waterings, which many growers prefer.
A free draining mix works best: fine bark, perlite, and a little sphagnum moss or leaf mold. Set each bulb with about half of it buried in the mix, growing point up.
Space bulbs so they do not touch, since new growths need room to expand. Crowded pans also dry unevenly, which raises rot risk.
Watering and Feeding
The single biggest mistake with a pleione orchid is watering it while it is still dormant. Warm wet soil can rot the shoots right off the bulbs.
Once leaves appear in spring, keep the mix moist but never wet, with good drainage underneath. Water more as the leaf grows through summer, then taper off as it yellows in autumn.
Feed with a balanced soluble fertilizer, diluted to quarter or half strength, through the growing season. Fish fertilizer or a balanced feed like Peters works well. Skip granular fertilizer, since it can sit too long against wet bulbs.
During active growth, a slightly shriveled bulb usually signals too little water. Yellow leaf tips more often signal too much. Adjust gradually rather than swinging between extremes.
Dividing Pleione and Growing On Bulbils
Each mature bulb produces two or more new growths a year, so pots fill up fast. Divide clumps every two or three years at repotting time, when bulbs are still dormant.
Separate bulbs by hand rather than cutting, since pleione bulbs pull apart cleanly. Pot smaller bulbs together so they build up size faster.
Some pleiones also form small bulbils on top of the old bulb after flowering. Pot these separately in a shallow tray, since they take two or three years to reach flowering size. For technique that applies across genera, see our how to divide orchids guide.
Buying Pleione Bulbs
Pleione orchids for sale are usually shipped as dry, dormant bulbs in winter, not as growing plants. Specialist nurseries sell them by bulb size, since larger bulbs bloom the first season.
Look for firm, plump bulbs with no soft spots or mold. A pleione formosana bulb around 2 to 3 cm across is typical flowering size.
Nurseries often grade bulbs as first size, which is largest and blooms that first season. Second size bulbs cost less but may take an extra year to reach flowering size.
Pot bulbs as soon as they arrive, even if it is still midwinter. They will sit dormant in the pot until light and warmth trigger growth in spring.
Common Pleione Failures
Watering during dormancy is the top cause of lost bulbs, as covered above. The second most common failure is heat: pleiones dislike hot, stuffy summers.
A plant baking on a sunny windowsill in July often stalls or drops leaves early. Move pots somewhere bright but cool once temperatures climb, and increase air movement.
A third failure is skipping the cold rest entirely. Without weeks near freezing, plants often produce weak growth or skip flowering the next spring.
Sources
- American Orchid Society: Pleione, genus culture overview. https://www.aos.org/explore/pleione
- Royal Horticultural Society: Pleione limprichtii plant details. https://www.rhs.org.uk/plants/13286/pleione-limprichtii/details
- Kew Science, Plants of the World Online: Pleione D.Don genus page. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30378-1
Frequently asked questions
Can a pleione orchid survive outdoors year round?
In mild climates, yes, as long as winters stay dry where the bulbs sit. The Rhododendron Species Botanical Garden reports survival near 5 F, but wet cold kills bulbs faster than cold alone.
Why did my pleione orchid not flower this year?
The most common cause is a missed cold, dry rest the previous winter. Without weeks near freezing, plants often skip flowering or bloom weakly.
How often should I repot a pleione orchid?
Repot every year or two, in late winter before growth starts. This is also the best time to divide crowded clumps.
Is Pleione Tongariro a species or a hybrid?
Pleione Tongariro is a hybrid grex, not a species. It is bred for large, reliable flowers rather than wild origin.
Can I keep a pleione orchid on a windowsill indoors?
Yes, many growers treat it as a windowsill orchid, moving it outdoors or to a cold spot for winter. It still needs bright, cool light and a genuine dry rest to rebloom.