Water
Water moderately during the growing season, ensuring good drainage. Allow the top inch of soil to dry out between waterings. Reduce watering in cooler months.
Also known as India Rubber Vine · Indian Rubbervine · Palay Rubber Vine
Safety note: This plant may be toxic to humans and pets. See toxicity details.
Cryptostegia grandiflora, also known as Palay Rubbervine, is a vigorous twining vine or shrub with large, trumpet-shaped pink to purple flowers.
At-a-glance light, water, soil, and growing conditions from plant data
Prefers full sun to partial shade, requiring at least 6 hours of direct sunlight daily for optimal flowering.
80% intensity
Water regularly during the growing season, allowing soil to dry slightly between waterings.
60% intensity
Reduce watering in winter.
Well-draining soil is essential. Tolerates a range of soil types, including sandy and loamy, but avoids waterlogged conditions.
50% intensity
Thrives in temperatures between 18-25 °C. Protect from frost.
70% intensity
Outdoor, Greenhouse
50% intensity
Feed with a balanced liquid fertilizer every 4-6 weeks during spring and summer.
50% intensity
Avoid over-fertilizing.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | Yes 3/5 intensity |
| Toxic for pets | Yes 3/5 intensity |
| Edible | No |
All parts of the plant are toxic if ingested, causing gastrointestinal upset and potential cardiac issues. Sap can cause skin irritation.
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water moderately during the growing season, ensuring good drainage. Allow the top inch of soil to dry out between waterings. Reduce watering in cooler months.
Prune to maintain shape and size, and to encourage bushier growth. Remove dead or damaged stems. Heavy pruning can be done in late winter or early spring before new growth begins.
Easily propagated from seeds sown in spring or from semi-hardwood cuttings taken in summer. Cuttings root readily in moist, well-draining potting mix.
Repot young plants annually in spring. Mature plants can be repotted every 2-3 years or when root-bound. Use a well-draining potting mix.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Palay Rubbervine (Cryptostegia grandiflora)
Where Palay Rubbervine (Cryptostegia grandiflora) is found

Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Gentianales |
| Family | Apocynaceae |
| Genus | Cryptostegia |
| Species | Cryptostegia grandiflora |
Similar in genus Cryptostegia
Answers based on plant encyclopedia data