Allamanda Cathartica L.

Commonly known as

Golden Trumpet

Allamanda cathartica is a tropical vine from Brazil with large golden-yellow trumpet flowers and glossy leaves.

Allamanda Cathartica L.

Commonly known as

Golden Trumpet

Allamanda cathartica is a tropical vine from Brazil with large golden-yellow trumpet flowers and glossy leaves.

Allamanda Cathartica L.

Commonly known as

Golden Trumpet

Allamanda cathartica is a tropical vine from Brazil with large golden-yellow trumpet flowers and glossy leaves.

Allamanda Cathartica L.

Commonly known as

Golden Trumpet

Allamanda cathartica is a tropical vine from Brazil with large golden-yellow trumpet flowers and glossy leaves.

Allamanda Cathartica L.

Commonly known as

Golden Trumpet

Allamanda cathartica is a tropical vine from Brazil with large golden-yellow trumpet flowers and glossy leaves.

Allamanda Cathartica L.

Commonly known as

Golden Trumpet

Allamanda cathartica is a tropical vine from Brazil with large golden-yellow trumpet flowers and glossy leaves.

Allamanda Cathartica L.

Commonly known as

Golden Trumpet

Allamanda cathartica is a tropical vine from Brazil with large golden-yellow trumpet flowers and glossy leaves.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Magnoliopsida

Order

Gentianales

Family

Apocynaceae Juss.

Genus

Allamanda L.

Species

Allamanda Cathartica L.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Magnoliopsida

Order

Gentianales

Family

Apocynaceae Juss.

Genus

Allamanda L.

Species

Allamanda Cathartica L.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Magnoliopsida

Order

Gentianales

Family

Apocynaceae Juss.

Genus

Allamanda L.

Species

Allamanda Cathartica L.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Magnoliopsida

Order

Gentianales

Family

Apocynaceae Juss.

Genus

Allamanda L.

Species

Allamanda Cathartica L.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Magnoliopsida

Order

Gentianales

Family

Apocynaceae Juss.

Genus

Allamanda L.

Species

Allamanda Cathartica L.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Magnoliopsida

Order

Gentianales

Family

Apocynaceae Juss.

Genus

Allamanda L.

Species

Allamanda Cathartica L.

Care Requirements

Sunlight

Requires full sun for best flowering, needing at least 6–8 hours of direct sunlight daily. Insufficient light results in leggy growth and reduced blooms.

Temperature

Thrives in warm, tropical temperatures between 20–30°C. Frost-sensitive; protect from temperatures below 10°C. Ideal for USDA zones 10–11.

Nutrient

Heavy feeder; benefits from regular applications of balanced fertilizer during the growing season. Supplement with phosphorus to promote abundant flowering.

Soil

Grows best in rich, fertile, well-drained soil amended with organic matter. Tolerates slightly acidic to neutral pH. Avoid heavy clay or poorly drained substrates.

Maintenance

Moderate maintenance. Prune regularly to control vigorous growth and encourage bushier form. Provide sturdy support for climbing. Remove spent flowers to prolong blooming.

Water

Prefers regular, consistent watering to keep soil evenly moist. Reduce watering in winter. Avoid waterlogging, which can cause root rot.

Care Requirements

Sunlight

Requires full sun for best flowering, needing at least 6–8 hours of direct sunlight daily. Insufficient light results in leggy growth and reduced blooms.

Temperature

Thrives in warm, tropical temperatures between 20–30°C. Frost-sensitive; protect from temperatures below 10°C. Ideal for USDA zones 10–11.

Nutrient

Heavy feeder; benefits from regular applications of balanced fertilizer during the growing season. Supplement with phosphorus to promote abundant flowering.

Soil

Grows best in rich, fertile, well-drained soil amended with organic matter. Tolerates slightly acidic to neutral pH. Avoid heavy clay or poorly drained substrates.

Maintenance

Moderate maintenance. Prune regularly to control vigorous growth and encourage bushier form. Provide sturdy support for climbing. Remove spent flowers to prolong blooming.

Water

Prefers regular, consistent watering to keep soil evenly moist. Reduce watering in winter. Avoid waterlogging, which can cause root rot.

Care Requirements

Sunlight

Requires full sun for best flowering, needing at least 6–8 hours of direct sunlight daily. Insufficient light results in leggy growth and reduced blooms.

Temperature

Thrives in warm, tropical temperatures between 20–30°C. Frost-sensitive; protect from temperatures below 10°C. Ideal for USDA zones 10–11.

Nutrient

Heavy feeder; benefits from regular applications of balanced fertilizer during the growing season. Supplement with phosphorus to promote abundant flowering.

Soil

Grows best in rich, fertile, well-drained soil amended with organic matter. Tolerates slightly acidic to neutral pH. Avoid heavy clay or poorly drained substrates.

Maintenance

Moderate maintenance. Prune regularly to control vigorous growth and encourage bushier form. Provide sturdy support for climbing. Remove spent flowers to prolong blooming.

Water

Prefers regular, consistent watering to keep soil evenly moist. Reduce watering in winter. Avoid waterlogging, which can cause root rot.

Care Requirements

Sunlight

Requires full sun for best flowering, needing at least 6–8 hours of direct sunlight daily. Insufficient light results in leggy growth and reduced blooms.

Temperature

Thrives in warm, tropical temperatures between 20–30°C. Frost-sensitive; protect from temperatures below 10°C. Ideal for USDA zones 10–11.

Nutrient

Heavy feeder; benefits from regular applications of balanced fertilizer during the growing season. Supplement with phosphorus to promote abundant flowering.

Soil

Grows best in rich, fertile, well-drained soil amended with organic matter. Tolerates slightly acidic to neutral pH. Avoid heavy clay or poorly drained substrates.

Maintenance

Moderate maintenance. Prune regularly to control vigorous growth and encourage bushier form. Provide sturdy support for climbing. Remove spent flowers to prolong blooming.

Water

Prefers regular, consistent watering to keep soil evenly moist. Reduce watering in winter. Avoid waterlogging, which can cause root rot.

Care Requirements

Sunlight

Requires full sun for best flowering, needing at least 6–8 hours of direct sunlight daily. Insufficient light results in leggy growth and reduced blooms.

Temperature

Thrives in warm, tropical temperatures between 20–30°C. Frost-sensitive; protect from temperatures below 10°C. Ideal for USDA zones 10–11.

Nutrient

Heavy feeder; benefits from regular applications of balanced fertilizer during the growing season. Supplement with phosphorus to promote abundant flowering.

Soil

Grows best in rich, fertile, well-drained soil amended with organic matter. Tolerates slightly acidic to neutral pH. Avoid heavy clay or poorly drained substrates.

Maintenance

Moderate maintenance. Prune regularly to control vigorous growth and encourage bushier form. Provide sturdy support for climbing. Remove spent flowers to prolong blooming.

Water

Prefers regular, consistent watering to keep soil evenly moist. Reduce watering in winter. Avoid waterlogging, which can cause root rot.

Care Requirements

Sunlight

Requires full sun for best flowering, needing at least 6–8 hours of direct sunlight daily. Insufficient light results in leggy growth and reduced blooms.

Temperature

Thrives in warm, tropical temperatures between 20–30°C. Frost-sensitive; protect from temperatures below 10°C. Ideal for USDA zones 10–11.

Nutrient

Heavy feeder; benefits from regular applications of balanced fertilizer during the growing season. Supplement with phosphorus to promote abundant flowering.

Soil

Grows best in rich, fertile, well-drained soil amended with organic matter. Tolerates slightly acidic to neutral pH. Avoid heavy clay or poorly drained substrates.

Maintenance

Moderate maintenance. Prune regularly to control vigorous growth and encourage bushier form. Provide sturdy support for climbing. Remove spent flowers to prolong blooming.

Water

Prefers regular, consistent watering to keep soil evenly moist. Reduce watering in winter. Avoid waterlogging, which can cause root rot.

Seasonal Behavior

Spring

Vigorous new growth emerges in spring. This is the ideal time for pruning, repotting, and beginning a regular fertilization schedule.

Autumn

Flowering continues into autumn in warm climates. Growth slows as temperatures decline. Reduce watering and fertilization as the plant prepares for rest.

Winter

Semi-dormant in winter. Protect from cold and frost. In tropical climates, may continue light flowering. Reduce watering but do not allow soil to dry completely.

Summer

Peak flowering season with large, trumpet-shaped golden-yellow blooms appearing continuously. Water and feed regularly to sustain prolific flowering.

Seasonal Behavior

Spring

Vigorous new growth emerges in spring. This is the ideal time for pruning, repotting, and beginning a regular fertilization schedule.

Autumn

Flowering continues into autumn in warm climates. Growth slows as temperatures decline. Reduce watering and fertilization as the plant prepares for rest.

Winter

Semi-dormant in winter. Protect from cold and frost. In tropical climates, may continue light flowering. Reduce watering but do not allow soil to dry completely.

Summer

Peak flowering season with large, trumpet-shaped golden-yellow blooms appearing continuously. Water and feed regularly to sustain prolific flowering.

Seasonal Behavior

Spring

Vigorous new growth emerges in spring. This is the ideal time for pruning, repotting, and beginning a regular fertilization schedule.

Autumn

Flowering continues into autumn in warm climates. Growth slows as temperatures decline. Reduce watering and fertilization as the plant prepares for rest.

Winter

Semi-dormant in winter. Protect from cold and frost. In tropical climates, may continue light flowering. Reduce watering but do not allow soil to dry completely.

Summer

Peak flowering season with large, trumpet-shaped golden-yellow blooms appearing continuously. Water and feed regularly to sustain prolific flowering.

Seasonal Behavior

Spring

Vigorous new growth emerges in spring. This is the ideal time for pruning, repotting, and beginning a regular fertilization schedule.

Autumn

Flowering continues into autumn in warm climates. Growth slows as temperatures decline. Reduce watering and fertilization as the plant prepares for rest.

Winter

Semi-dormant in winter. Protect from cold and frost. In tropical climates, may continue light flowering. Reduce watering but do not allow soil to dry completely.

Summer

Peak flowering season with large, trumpet-shaped golden-yellow blooms appearing continuously. Water and feed regularly to sustain prolific flowering.

Seasonal Behavior

Spring

Vigorous new growth emerges in spring. This is the ideal time for pruning, repotting, and beginning a regular fertilization schedule.

Autumn

Flowering continues into autumn in warm climates. Growth slows as temperatures decline. Reduce watering and fertilization as the plant prepares for rest.

Winter

Semi-dormant in winter. Protect from cold and frost. In tropical climates, may continue light flowering. Reduce watering but do not allow soil to dry completely.

Summer

Peak flowering season with large, trumpet-shaped golden-yellow blooms appearing continuously. Water and feed regularly to sustain prolific flowering.

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Botanical earth

support@botanical.earth

© 2026 Botanical Earth. All Rights Reserved

Botanical earth

support@botanical.earth

© 2026 Botanical Earth. All Rights Reserved