One-leafed Haplormosia Plant Care
Haplormosia monophylla (Harms) Harms
Updated · Sources · How we source care data
This unique plant is characterized by its large, single green leaf that can reach over 6 feet in length. Originating from the tropical rainforests of South America, Haplormosia monophylla is highly sought after by plant collectors for its striking appearance and rare beauty.
Every 7–10 days
Bright indirect to partial shade
65–85°F
60–80%
At a glance
How do you care for One-leafed Haplormosia?
Water One-leafed Haplormosia every 7–10 days, letting the top layer of soil dry out between waterings, and give it bright indirect to partial shade. It prefers temperatures of 65–85°F (18–29°C) and 60–80% humidity. Fertilize it every month during the growing season.
Where Is the One-leafed Haplormosia Native To?
What Is the One-leafed Haplormosia?
One-leafed Haplormosia (Haplormosia monophylla) belongs to the Fabaceae family within the Haplormosia genus. One-leafed Haplormosia is native to Cameroon, Ivory Coast, Liberia, Nigeria, and Sierra Leone. One-leafed Haplormosia is also known as Single-leafed Haplormosia.
One-leafed Haplormosia displays a vining, climbing perennial growth habit, reaching up to 1 ft tall with a spread of approximately 1 ft. One-leafed Haplormosia produces small clusters of pink, purple, or white pea-like flowers.
Leaf size: approximately 6 inches.
How Often Should You Water a One-leafed Haplormosia?
Haplormosia monophylla requires watering every 7–10 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 7–10 days
Let soil partially dry between waterings
What Light Does the One-leafed Haplormosia Need?
One-leafed Haplormosia thrives in bright indirect to partial shade. Avoid placing One-leafed Haplormosia in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Bright indirect to partial shade
What Temperature and Humidity Does the One-leafed Haplormosia Prefer?
Haplormosia monophylla grows best at temperatures of 65–85°F. One-leafed Haplormosia prefers humidity levels of 60–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
65–85°F
Humidity
60–80%
What Soil Mix Works Best for a One-leafed Haplormosia?
Well-draining loamy soil with added organic matter for nutrients. Good drainage is essential for One-leafed Haplormosia to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a One-leafed Haplormosia?
Feed One-leafed Haplormosia 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 One-leafed Haplormosia?
Repot every 1-2 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 One-leafed Haplormosia?
One-leafed Haplormosia can be propagated through seeds, division of root ball.
Is the One-leafed Haplormosia Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list One-leafed Haplormosia, 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 One-leafed Haplormosia?
One-leafed Haplormosia is susceptible to aphids, leafhoppers, whiteflies. 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 One-leafed Haplormosia Need?
One-leafed Haplormosia grows outdoors in USDA Zone 11a – 12b. It survives winters down to planting zone 11a. One-leafed Haplormosia is native to Cameroon, Ivory Coast, Liberia, Nigeria, and Sierra Leone. In cooler regions, grow One-leafed Haplormosia as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 11a – 12b
Keep exploring plants
One-leafed Haplormosia 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 Haplormosia genus — compare its care with other Haplormosia species on PlantoScan.
Haplormosia is part of the Fabaceae plant family — browse all Fabaceae genera and species.
One-leafed Haplormosia 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: Haplormosia monophylla (Harms) Harms, family Fabaceae (first published in Veg. Erde 9(III 1): 533 (1915)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list One-leafed Haplormosia, 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 11a – 12b, 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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