Rubber Vine Plant Care
Cryptostegia grandiflora Roxb. ex R.Br.
Updated · Sources · How we source care data
Cryptostegia grandiflora, commonly known as rubber vine, is a woody-perennial vine that is native to south-west Madagascar. It is also a significant weed in northern Australia, sometimes regarded as the worst weed in all of Australia.
Every 7–10 days
Full sun to partial shade
65–85°F
40–60%
At a glance
How do you care for Rubber Vine?
Water Rubber Vine every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 65–85°F (18–29°C) and 40–60% humidity. 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 Rubber Vine Native To?
What Is the Rubber Vine?
Rubber Vine (Cryptostegia grandiflora) belongs to the Apocynaceae family within the Cryptostegia genus. Rubber Vine is native to south-west Madagascar. Rubber Vine is also known as Purple Allamanda, Palay Allamanda.
Rubber Vine displays a vining, climbing shrub growth habit, reaching up to 6 ft tall with a spread of approximately 3 ft. Rubber Vine produces showy clusters of pink or purple trumpet-shaped flowers.
Leaf size: approximately 4 inches.
How Often Should You Water a Rubber Vine?
Cryptostegia grandiflora 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 Rubber Vine Need?
Rubber Vine thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Rubber Vine Prefer?
Cryptostegia grandiflora grows best at temperatures of 65–85°F. Rubber Vine prefers humidity levels of 40–60%.
Temperature
65–85°F
Humidity
40–60%
What Soil Mix Works Best for a Rubber Vine?
Well-draining sandy soil mix with added perlite for improved drainage. Good drainage is essential for Rubber Vine to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Rubber Vine?
Feed Rubber Vine 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 Rubber Vine?
Repot every 1-2 years in 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 Rubber Vine?
Rubber Vine can be propagated through stem cuttings, air layering. Similar propagation techniques also apply to madagascar rubber vine plant care, which shares the same genus.
Is the Rubber Vine Toxic to Pets and Children?
Toxic (caution)
Reported as toxic in our plant data. Not verified by the ASPCA.
Toxic to humans and pets, especially if ingested
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 Rubber Vine?
Rubber Vine is susceptible to aphids, spider mites, 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 Rubber Vine Need?
Rubber Vine grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Rubber Vine is native to south-west Madagascar. In cooler regions, grow Rubber Vine as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13b
Keep exploring plants
Rubber Vine 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 Cryptostegia genus — compare its care with other Cryptostegia species on PlantoScan.
Cryptostegia is part of the Apocynaceae plant family — browse all Apocynaceae genera and species.
Rubber Vine 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: Cryptostegia grandiflora Roxb. ex R.Br., family Apocynaceae (first published in Bot. Reg. 5: t. 435 (1819)) — World Flora Online record, IPNI name record.
- Pet toxicity: Rubber Vine 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.
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