Ormosia howii Plant Care

Ormosia howii L.Chen

Updated · Sources · How we source care data

Ormosia howii, the Hainan ormosia, is a species of flowering plant in the family Fabaceae native to southern China. It was initially found on Diaoluo Shan, Hainan Island in 1954 and then in Yangchun, Guangdong in 1957, both times in extremely small populations.

🌳Trees🌿Shrubs🍃Climbers & Vines
Water

Every 7–14 days

Light

Full sun to partial shade

Temp

60–85°F

Humidity

40–70%

At a glance

How do you care for Ormosia howii?

Plant Ormosia howii in full sun to partial shade (USDA zones 13a) and water a young tree every 7–14 days until it is established. It tolerates temperatures of 60–85°F (16–29°C). Fertilize it every 6 months during the growing season.

Where Is the Ormosia howii Native To?

Native range1 country

What Is the Ormosia howii?

Ormosia howii (Ormosia howii) belongs to the Fabaceae family within the Ormosia genus. Ormosia howii is native to southern China.

Ormosia howii displays a tall, upright tree growth habit, reaching up to 30 ft tall with a spread of approximately 15 ft. Ormosia howii produces small clusters of red, pink, or white flowers.

Leaf size: approximately 6 inches.

How Often Should You Water a Ormosia howii?

Water a young or newly planted Ormosia howii every 7–14 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established trees mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Watering Frequency

Every 7–14 days

Until established; then in dry spells

What Light Does the Ormosia howii Need?

Ormosia howii thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Ormosia howii Prefer?

Ormosia howii tolerates temperatures of 60–85°F. Ormosia howii prefers humidity levels of 40–70%.

Temperature

60–85°F

Humidity

40–70%

What Soil Mix Works Best for a Ormosia howii?

Well-draining loamy soil with added organic matter. Good drainage is essential for Ormosia howii to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Ormosia howii?

Feed Ormosia howii every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established trees in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

Fertilizing

Every 6 months

During the growing season

The PlantoScan app can remind you when to water and when to fertilize each plant.

Where Should You Plant a Ormosia howii?

Choose a spot with full sun to partial shade and well-draining loamy soil with added organic matter. Avoid low spots where water collects after rain.

Ormosia howii is suited to USDA Zone 13a.

Plant container-grown or balled-and-burlapped trees in spring or early autumn, setting the root flare at soil level, and water well after planting.

How Far Apart Should You Plant a Ormosia howii?

Ormosia howii can spread to about 15 ft (4.6 m) and reach about 30 ft (9 m) tall. Space plants about 15 ft (4.6 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the tree spacing calculator.

How Do You Prune a Ormosia howii?

Prune Ormosia howii while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the tree in one year.

How Do You Care for a Ormosia howii in Winter?

Ormosia howii is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

How Do You Propagate a Ormosia howii?

Ormosia howii can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to beadwood plant care, which shares the same genus.

Is the Ormosia howii Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Ormosia howii, 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 Ormosia howii?

Ormosia howii is susceptible to aphids, leaf miners, 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 Ormosia howii Need?

Ormosia howii grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Ormosia howii is native to southern China. In cooler regions, grow Ormosia howii as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 13a

Keep exploring plants

Ormosia howii 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 Ormosia genus — compare its care with other Ormosia species on PlantoScan.

Ormosia is part of the Fabaceae plant family — browse all Fabaceae genera and species.

Ormosia howii thrives in bright light and direct sun — see other bright-light plants.

More Ormosia Species

Other Ormosia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:

Sources

  • Scientific name & taxonomy: Ormosia howii L.Chen, family Fabaceae — World Flora Online record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Ormosia howii, 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 13a, 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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