Ambrosia tenuifolia — a medium houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Ambrosia tenuifolia

Ambrosia Tenuifolia

Updated · 36 observations
ON THIS PLANT
A note from PlantMom

Slimleaf bur ragweed is fairly resistant to disease and generally does not suffer from many illnesses. That said, it can still be affected by pests and diseases present in its surroundings. Such infestations or infections are usually mild. Care-wise, this plant requires moderate maintenance. Regular pruning is necessary to keep an attractive appearance and support healthy growth. Applying fertilizer can also encourage flowering. Slimleaf bur ragweed is suitable for anyone with outdoor space, such as a garden or patio, and does not demand extensive plant-care experience. It may need more attention when grown indoors.

— PlantMom
CARE GUIDE

How to keep Ambrosia Tenuifolia.

Light

Slimleaf bur ragweed comes from bright, open areas where it does best in full sun. It will tolerate partial sun, yet favors direct sunlight for optimal growth. This plant, which can be annual or biennial, is recognized for its sun-loving nature.

Water

Slimleaf bur ragweed thrives in moderate climates that consistently provide moisture, needing weekly watering. It prefers well-drained soil that mirrors its natural habitat's balance between dry and wet conditions. Typically grown outdoors, slimleaf bur ragweed is quite resilient during the growing season and efficiently uses water even when rainfall varies.

Temperature

Slimleaf bur ragweed comes from tropical areas, where the climate is generally warm and humid. As a result, it is well suited to high temperatures and humidity. It does not tolerate sudden temperature changes and prefers a stable temperature, so it is important to prevent temperature fluctuations indoors. It typically cannot withstand cold and requires warmer conditions to grow. If the temperature falls too low, the plant may stop growing or die.

Fertilizer

Light, frequent applications of fertilizer help Slimleaf bur ragweed develop healthy leaves. Fertilize Slimleaf bur ragweed roughly once a month during the summer. Nitrogen is important for foliage, and adding nitrogen-rich sources helps Slimleaf bur ragweed thrive.

Pruning

The slimleaf bur ragweed, known for its slender leaves, benefits greatly from strategic pruning in the spring. By trimming one-third of the plant, you can promote denser foliage and improve air circulation, while also increasing its overall health by removing any dead branches. Regular pruning is essential to prevent the plant from spreading too aggressively. For more detailed information about caring for slimleaf bur ragweed, consult horticultural guides tailored to this specific plant.

CHARACTERISTICS

Botanical profile.

Plant Type
Herb
Life Cycle
Annual
Genus
Ambrosia
Family
Asteraceae
Hardiness Zone
7-10
Mature Height
30 cm to 61 cm
Mature Spread
30 cm to 49 cm
Leaf Color
Green, Dark Green
Leaf Type
Deciduous
Flower Size
0.20 cm to 0.25 cm
Bloom Time
Late summer, Early fall, Mid fall
Planting Time
Spring, Summer
Harvest Time
Fall
Native Area
Uruguay, Paraguay, Argentina, Bolivia, Peru, Brazil
ALSO KNOWN AS

Other names.

en Bur ragweed en Lacy ambrosia en Lacy ragweed en Narrow-leaf ragweed en Slimleaf bur ragweed en Field ragweed en Slimleaf burr ragweed en False ragweed en Slim-leaf burr ragweed
PLATES
Ambrosia tenuifolia leaf
PLATE 01 · leaf
Ambrosia tenuifolia leaf
PLATE 02 · leaf
Ambrosia tenuifolia flower
PLATE 03 · flower
Ambrosia tenuifolia flower
PLATE 04 · flower
Ambrosia tenuifolia fruit
PLATE 05 · fruit
Ambrosia tenuifolia fruit
PLATE 06 · fruit
ALSO IN THE LIBRARY

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