Photo: no rights reservedCC0 1.0via iNaturalist
Tianma Plant Care
Gastrodia elata Blume
Updated · Sources · How we source care data
This unique orchid lacks leaves and instead produces a stem covered in small, reddish-brown flowers. Gastrodia elata is native to East Asia, particularly China, Japan, and Korea. Plant collectors are drawn to this species for its intriguing underground growth habit and its symbiotic relationship with fungi.
Every 14–21 days
Low to medium indirect light
65–75°F
60–80%
At a glance
How do you care for Tianma?
Water Tianma every 14–21 days, letting the top layer of soil dry out between waterings, and give it low to medium indirect light. It prefers temperatures of 65–75°F (18–24°C) and 60–80% humidity. Fertilize it every month during the growing season.
Where Is the Tianma Native To?
What Is the Tianma?
Tianma (Gastrodia elata) belongs to the Orchidaceae family within the Gastrodia genus. Tianma is native to Nepal, Bhutan, India, Japan, Korea, Siberia, Taiwan, and China. Tianma is also known as Gastrodia Tuber.
Tianma displays a terrestrial, mycoheterotrophic growth habit, reaching up to 1 ft tall with a spread of approximately . Tianma produces small, inconspicuous flowers with unique pollination mechanisms.
Leaf size: approximately 4 inches.
How Often Should You Water a Tianma?
Gastrodia elata requires watering every 14–21 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 14–21 days
Let soil partially dry between waterings
What Light Does the Tianma Need?
Tianma thrives in low to medium indirect light. Avoid placing Tianma in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Low to medium indirect light
What Temperature and Humidity Does the Tianma Prefer?
Gastrodia elata grows best at temperatures of 65–75°F. Tianma prefers humidity levels of 60–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
65–75°F
Humidity
60–80%
What Soil Mix Works Best for a Tianma?
Well-draining orchid mix with bark and sphagnum moss. Good drainage is essential for Tianma to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Tianma?
Feed Tianma every month during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every month
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Tianma?
Repot every 1-2 years after flowering. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Tianma?
Tianma can be propagated through division of pseudobulbs, back bulbs, or keikis. Similar propagation techniques also apply to potato orchid plant care, which shares the same genus.
Is the Tianma Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Tianma, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Tianma?
Tianma is susceptible to aphids, scale insects, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Tianma Need?
Tianma grows outdoors in USDA Zone 5a – 8b. It survives winters down to planting zone 5a. Tianma is native to Nepal, Bhutan, India, Japan, Korea, Siberia, Taiwan, and China.
Hardiness Zone
Zone 5a – 8b
Keep exploring plants
Tianma is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Gastrodia genus — compare its care with other Gastrodia species on PlantoScan.
Gastrodia is part of the Orchidaceae plant family — browse all Orchidaceae genera and species.
Tianma copes with lower light than most plants — browse the full list of low-light plants.
More Gastrodia Species
Other Gastrodia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Gastrodia elata Blume, family Orchidaceae (first published in Mus. Bot. 2: 174 (1856)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Tianma, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: Public domain, CC0 1.0, iNaturalist — original.
- Hardiness zone: USDA Zone 5a – 8b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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