Arrowleaf ragwort - Senecio triangularis (Taxonomy, Characteristics, Distribution, Images)

Arrowleaf ragwort

Also known as: Arrowleaf butterweed

Arrowleaf ragwort (*Senecio triangularis*) is a plant species that grows along streams and in woodlands. It is found in almost all temperate areas of North America. This species was discovered in the 1930s by Scottish botanist Thomas Drummond.

Scientific classification

Species

Arrowleaf ragwort (Senecio triangularis)

Asters bellflowers fanflowers and allies

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Toxic to Pets

Toxicity

Weeds

Weed or not

Perennial

Lifespan

15 cm to 30 cm

Spread

Green

Leaf Color

2.5 cm

Flower Size

Brown

Fruit Color

Yellow

Flower Color

Green

Stem Color

Winter dormancy

Dormancy

Deciduous

Leaf type

0 - 32 ℃

Ideal Temperature

Summer, Fall

Growth Season

Moderate

Growth Rate

Images of Arrowleaf ragwort

Attributes of Arrowleaf ragwort

Growth Rate

During the temperate seasons of Summer and Fall, the arrowleaf ragwort exhibits a moderate growth rate. This rate results in a gradual increase in plant height and leaf production, leading to the rich infilling of its characteristic triangular leaves. While the growth lessens in other seasons, during Summer and Fall, the arrowleaf ragwort's moderate pace contributes to its robustness and resilience, making it an adaptable choice for horticulturists.

Distribution of Arrowleaf ragwort

Distribution Map

Arrowleaf ragwort, a flowering plant, is native to the temperate regions of the North American west, thriving in diverse habitats from lowland meadows to alpine zones. This species has also been introduced to parts of Asia, adapting to similar climatic conditions as those found in its original range.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Open woodlands, coniferous forests, rocky stream sides

Hemisphere Trend Curve

Northern

Sorthern

Toxicity

Arrowleaf ragwort is mildly toxic to humans, causing contact dermatitis and potential liver damage if ingested in large amounts. Symptoms include vomiting due to pyrrolizidine alkaloids. The repellent taste deters consumption.

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Weed Control

Arrowleaf ragwort is a weed that is native to North America. It is currently not listed as a noxious weed at the state or federal level. However, it could become a weed in some contexts as it grows quickly and is somewhat long-lasting. It typically grows alongside waterways and it self-seeds readily. Herbicide applications aimed at more invasive ragworts have also reduced arrowleaf ragwort populations, which indicates that herbicide applications may be used to control arrowleaf ragwort in contexts where it is undesired. The seed heads can also be removed to prevent further spread.

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Care Guide for Arrowleaf ragwort

Every week

Water

Full sun

Sunlight

0 - 32 ℃

Ideal Temperature

Water: Adapted to moist, mountainous environments, arrowleaf ragwort thrives with consistent moisture and moderate drought tolerance. It requires weekly watering to maintain health, flourishing in well-draining yet moist soil, ideally in cooler climates with ample rainfall.

Propagation: Arrowleaf ragwort features triangular leaves and yellow clustered flowers. Propagate by sowing fresh seeds in well-draining soil, lightly covering them for darkness. Maintain even moisture without waterlogging and ensure a stable, moderate temperature for healthy growth.

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Images of Arrowleaf ragwort

Attributes of Arrowleaf ragwort

Distribution of Arrowleaf ragwort

Toxicity

Weed Control

Care Guide for Arrowleaf ragwort

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