Montrouziera cauliflora Plant Care
Montrouziera cauliflora Planch. & Triana
Updated · Sources · How we source care data
Montrouziera cauliflora, the giant Houp tree, is a species of flowering plant in the family Clusiaceae. It is found only in New Caledonia, and is one of the largest trees in the seasonal tropical forests there.
Every 7–14 days
Full sun to partial shade
65–85°F
50–70%
At a glance
How do you care for Montrouziera cauliflora?
Plant Montrouziera cauliflora in full sun to partial shade (USDA zones 13b) and water a young tree every 7–14 days until it is established. It tolerates temperatures of 65–85°F (18–29°C). Fertilize it every 6 months during the growing season.
What Is the Montrouziera cauliflora?
Montrouziera cauliflora (Montrouziera cauliflora) belongs to the Clusiaceae family within the Montrouziera genus. Montrouziera cauliflora is native to moist evergreen dense forest of low and medium altitude on all types of soil.
Montrouziera cauliflora displays a tall, upright tree growth habit, reaching up to 30 ft tall with a spread of approximately 15 ft. Montrouziera cauliflora produces small, white, star-shaped flowers in clusters.
Leaf size: approximately 6 inches.
How Often Should You Water a Montrouziera cauliflora?
Water a young or newly planted Montrouziera cauliflora 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 Montrouziera cauliflora Need?
Montrouziera cauliflora thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Montrouziera cauliflora Prefer?
Montrouziera cauliflora tolerates temperatures of 65–85°F. Montrouziera cauliflora prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
65–85°F
Humidity
50–70%
What Soil Mix Works Best for a Montrouziera cauliflora?
Well-draining, acidic soil mix with added organic matter like peat moss. Good drainage is essential for Montrouziera cauliflora to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Montrouziera cauliflora?
Feed Montrouziera cauliflora 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 Montrouziera cauliflora?
Choose a spot with full sun to partial shade and well-draining, acidic soil mix with added organic matter like peat moss. Avoid low spots where water collects after rain.
Montrouziera cauliflora is suited to USDA Zone 13b.
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 Montrouziera cauliflora?
Montrouziera cauliflora 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 Montrouziera cauliflora?
Prune Montrouziera cauliflora 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 Montrouziera cauliflora in Winter?
Montrouziera cauliflora 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 Montrouziera cauliflora?
Montrouziera cauliflora can be propagated through seeds, stem cuttings.
Is the Montrouziera cauliflora Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Montrouziera cauliflora, 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 Montrouziera cauliflora?
Montrouziera cauliflora is susceptible to aphids, scale insects, caterpillars. 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 Montrouziera cauliflora Need?
Montrouziera cauliflora grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Montrouziera cauliflora is native to moist evergreen dense forest of low and medium altitude on all types of soil. In cooler regions, grow Montrouziera cauliflora as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13b
Keep exploring plants
Montrouziera cauliflora 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 Montrouziera genus — compare its care with other Montrouziera species on PlantoScan.
Montrouziera is part of the Clusiaceae plant family — browse all Clusiaceae genera and species.
Montrouziera cauliflora 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: Montrouziera cauliflora Planch. & Triana, family Clusiaceae (first published in Ann. Sci. Nat., Bot. , sér. 4, 14: 294 (1860)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Montrouziera cauliflora, 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 13b, 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.
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