Slimleaf bur ragweed (Ambrosia tenuifolia)

Slimleaf bur ragweed

Also known as: Slim-leaf burr ragweed, False ragweed

Slimleaf bur ragweed is a slender perennial herb distinguished by its delicate, finely divided leaves and inconspicuous greenish flower heads. Thriving in disturbed, open habitats, its deep root system allows it to withstand drought conditions. Its wispy appearance belies a resilient nature, often making it a robust presence in its native ecosystem.

Scientific classification

Species

Slimleaf bur ragweed (Ambrosia tenuifolia)

Asters bellflowers fanflowers and allies

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Annual

Lifespan

Deciduous

Leaf type

Images of Slimleaf bur ragweed

Distribution of Slimleaf bur ragweed

Distribution Map

Slimleaf bur ragweed is native to parts of South America, where its presence encompasses several major regions. Over time, slimleaf bur ragweed has spread to various territories across multiple continents including Europe, the Middle East, and Africa, as well as having a recognized presence in New Zealand. While in certain areas, slimleaf bur ragweed may be sometimes thought to be naturalized, in others, particularly a region in South America, it is considered invasive and may have an impact on local ecosystems.

Native

Cultivated

Invasive

Introduced

No species reported

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Care Guide for Slimleaf bur ragweed

Every week

Water

Full sun

Sunlight

Water: Slimleaf bur ragweed thrives in moderate climates with consistent moisture, requiring weekly watering. It prefers well-drained soil, mimicking its natural dry-wet habitat balance. Primarily grown outdoors, slimleaf bur ragweed exhibits resilience during the growing season, effectively utilizing water despite varying rainfall.

Fertilize: To maintain slimleaf bur ragweed's vigor, use a balanced fertilizer bi-monthly during spring and summer, favoring high nitrogen options for foliage growth. Adjust frequency in fall and stop in winter. Apply carefully to avoid direct contact with slimleaf bur ragweed, preventing over-fertilization that could harm the plant.

Pruning: Slimleaf bur ragweed features slender leaves and thrives with strategic pruning in spring. Trim one-third for denser foliage and better air circulation, while removing dead branches for health. Regular pruning helps control aggressive spreading. Consult horticultural guides for tailored insights about slimleaf bur ragweed.

Propagation: Native to tropical and subtropical regions, slimleaf bur ragweed propagates best via sowing in well-draining soil. Use fresh seeds and sow shallowly, providing ample sunlight. Mist regularly to keep soil moist. Maintain a stable environment for seedlings until ready for transplanting, emphasizing precision and patience.

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