Cerbera inflata Plant Care
Cerbera inflata S.T.Blake
Updated · Sources · How we source care data
Cerbera inflata, commonly known as the cassowary plum, grey milkwood, Joojooga, or rubber tree, is a plant in the family Apocynaceae endemic to northeast Queensland, specifically the Atherton Tableland and adjacent areas.
Every 7–14 days
Full sun to partial shade
65–85°F
50–70%
At a glance
How do you care for Cerbera inflata?
Plant Cerbera inflata 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. It is reported as toxic to pets, so keep it out of reach of pets.
Where Is the Cerbera inflata Native To?
What Is the Cerbera inflata?
Cerbera inflata (Cerbera inflata) belongs to the Apocynaceae family within the Cerbera genus. Cerbera inflata is native to northeast Queensland, specifically the Atherton Tableland and adjacent areas.
Cerbera inflata displays a small tree or shrub growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Cerbera inflata produces small white fragrant flowers in clusters.
Leaf size: approximately 4 inches.
How Often Should You Water a Cerbera inflata?
Water a young or newly planted Cerbera inflata 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 Cerbera inflata Need?
Cerbera inflata thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Cerbera inflata Prefer?
Cerbera inflata tolerates temperatures of 65–85°F. Cerbera inflata 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 Cerbera inflata?
Well-draining sandy loam with added organic matter. Good drainage is essential for Cerbera inflata to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Cerbera inflata?
Feed Cerbera inflata 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 Cerbera inflata?
Choose a spot with full sun to partial shade and well-draining sandy loam with added organic matter. Avoid low spots where water collects after rain.
Cerbera inflata 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 Cerbera inflata?
Cerbera inflata can spread to about 4 ft (1.2 m) and reach about 6 ft (2 m) tall. Space plants about 4 ft (1.2 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 Cerbera inflata?
Prune Cerbera inflata 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 Cerbera inflata in Winter?
Cerbera inflata 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 Cerbera inflata?
Cerbera inflata can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to yellow bird's eye plant care, which shares the same genus.
Is the Cerbera inflata Toxic to Pets and Children?
Toxic (caution)
Reported as toxic in our plant data. Not verified by the ASPCA.
Toxic to humans and pets
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 Cerbera inflata?
Cerbera inflata 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 Cerbera inflata Need?
Cerbera inflata grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Cerbera inflata is native to northeast Queensland, specifically the Atherton Tableland and adjacent areas. In cooler regions, grow Cerbera inflata as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13b
Keep exploring plants
Cerbera inflata 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 Cerbera genus — compare its care with other Cerbera species on PlantoScan.
Cerbera is part of the Apocynaceae plant family — browse all Apocynaceae genera and species.
Cerbera inflata 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: Cerbera inflata S.T.Blake, family Apocynaceae (first published in Proc. Roy. Soc. Queensland 70: 33 (1959)) — World Flora Online record, IPNI name record.
- Pet toxicity: Cerbera inflata is reported as toxic to pets in our plant data (not verified by the ASPCA), so treat it with caution. 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.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
