Water
Water thoroughly when the top 2-3 cm of soil is dry. Avoid waterlogging, as this can lead to root rot. Reduce watering in winter to mimic its natural dormancy period.
Ensure good drainage in the pot to prevent excess moisture accumulation.
Also known as Thevetia
Safety note: This plant may be toxic to humans and pets. See toxicity details.
Yellow Oleander (Cascabela thevetioides) is a showy ornamental shrub or small tree with bright yellow, trumpet-shaped flowers. Native to Mexico and Central America.
At-a-glance light, water, soil, and growing conditions from plant data
Full sun is ideal.
100% intensity
Needs at least 6 hours of direct sunlight daily for best flowering and growth.
Allow soil to dry slightly between waterings.
50% intensity
Prefers well-draining soil and can tolerate some drought once established.
Well-drained
50% intensity
Warm temperatures.
75% intensity
Thrives in temperatures between 20-30°C. Protect from frost; bring indoors if temperatures drop below 10°C.
Outdoor
50% intensity
Moderate feeding during growing season.
50% intensity
Use a balanced liquid fertilizer every 4-6 weeks from spring to early autumn.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | Yes 5/5 intensity |
| Toxic for pets | Yes 5/5 intensity |
| Edible | No |
All parts of the plant are toxic.
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water thoroughly when the top 2-3 cm of soil is dry. Avoid waterlogging, as this can lead to root rot. Reduce watering in winter to mimic its natural dormancy period.
Ensure good drainage in the pot to prevent excess moisture accumulation.
Prune after flowering to maintain shape and encourage bushier growth. Remove dead, damaged, or crossing branches. Heavy pruning can be done in late winter or early spring before new growth begins to rejuvenate the plant.
Propagate from semi-hardwood cuttings taken in summer or autumn. Dip cuttings in rooting hormone and plant in a well-draining potting mix. Keep the cuttings moist and warm until roots form, which can take several weeks.
Repot every 2-3 years or when the plant becomes root-bound. Use a well-draining potting mix, such as a blend of potting soil and perlite. Choose a pot that is slightly larger than the current one.
Repot in spring before new growth starts.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Yellow Oleander (Cascabela thevetioides)
Where Yellow Oleander (Cascabela thevetioides) 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 | Cascabela |
| Species | Cascabela thevetioides |
Similar in genus Cascabela
Answers based on plant encyclopedia data
