Chinese Ditch-moss Plant Care
Penthorum chinense Pursh
Updated · Sources · How we source care data
Penthorum chinense, commonly known as Oriental penthorum, is a plant species native to much of East Asia. It has been reported from China, Korea, Japan, Mongolia, Russia, Vietnam, Laos and Thailand.
Every 3–5 days
Full sun to part shade
50–80°F
40–70%
At a glance
How do you care for Chinese Ditch-moss?
Water Chinese Ditch-moss every 3–5 days, letting the top layer of soil dry out between waterings, and give it full sun to part shade. It prefers temperatures of 50–80°F (10–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Chinese Ditch-moss Native To?
What Is the Chinese Ditch-moss?
Chinese Ditch-moss (Penthorum chinense) belongs to the Penthoraceae family within the Penthorum genus. Chinese Ditch-moss is native to much of East Asia. Chinese Ditch-moss is also known as Chinese Loosestrife.
Chinese Ditch-moss displays an upright, spreading perennial growth habit, reaching up to 2 ft tall with a spread of approximately 1.5 ft. Chinese Ditch-moss produces small, white to pale pink flowers in terminal clusters.
Leaf size: approximately 3 inches.
How Often Should You Water a Chinese Ditch-moss?
Penthorum chinense requires watering every 3–5 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 3–5 days
Let soil partially dry between waterings
What Light Does the Chinese Ditch-moss Need?
Chinese Ditch-moss thrives in full sun to part shade.
Light Requirement
Full sun to part shade
What Temperature and Humidity Does the Chinese Ditch-moss Prefer?
Penthorum chinense grows best at temperatures of 50–80°F. Chinese Ditch-moss prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Chinese Ditch-moss?
Moist, fertile soil with good drainage. Good drainage is essential for Chinese Ditch-moss to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Chinese Ditch-moss?
Feed Chinese Ditch-moss every 6 months 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 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Chinese Ditch-moss?
Repot every 2-3 years in early spring. 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 Chinese Ditch-moss?
Chinese Ditch-moss can be propagated through seeds, division of root ball.
Is the Chinese Ditch-moss Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Chinese Ditch-moss, 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 Chinese Ditch-moss?
Chinese Ditch-moss is susceptible to aphids, leafhoppers, 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 Chinese Ditch-moss Need?
Chinese Ditch-moss grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Chinese Ditch-moss is native to much of East Asia. In cooler regions, grow Chinese Ditch-moss as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Chinese Ditch-moss 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 Penthorum genus — compare its care with other Penthorum species on PlantoScan.
Penthorum is part of the Penthoraceae plant family — browse all Penthoraceae genera and species.
Chinese Ditch-moss thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Penthorum chinense Pursh, family Penthoraceae (first published in Fl. Amer. Sept. 1: 323 (1813)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Chinese Ditch-moss, 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.
- Hardiness zone: USDA Zone 12a, calculated from the plant's minimum temperature.
- 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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