Senecio vulgaris: info from PIER (PIER species info)

Pacific Island Ecosystems at Risk (PIER)

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Senecio vulgaris
L., Asteraceae

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Present on Pacific Islands? yes

Primarily a threat at high elevations? no

Common name(s): [more details]

English: common groundsel, groundsel, old-man-in-the-Spring

French: sénecon vulgaire

Habit: herb

Description: "Annuals, (10-) 20-50 (-60+) cm (taprooted). Herbage glabrous or sparsely and unevenly tomentose when young. Stems usually 1. Leaves evenly distributed; petiolate; blades ovate to oblanceolate, 2-10 x 0.5-2 (-4) cm, bases tapered, margins lobulate to dentate, ultimate margins often secondarily dentate to denticulate (distal leaves sessile). Heads 8-20 in loose, corymbiform arrays. Calyculi of 2-4(-6+) bractlets (prominent, black-tipped, lengths about 1/4 phyllaries). Phyllaries ± 21, 4-6 mm, tips usually green, sometimes black. Ray florets 0. Cypselae usually sparsely hairy, sometimes nearly glabrous" (Flora of North America online).

Habitat/ecology: In North America, "disturbed sites; 1-1000 m. Particularly abundant in southern areas of cool damp winters or northern areas of cool damp summers" (Flora of North America online). In New Zealand, "waste places, cultivated land, gardens, riverbeds and stony sites, from coastal areas to 700 m" (Webb et al., 1988; p. 277). "In Chile this species grows in the following environmental conditions: Medium altitude up to the timber line; low altitude, interior valleys; coastal mountains, 500-2000 m; coastal areas, 0-500 m. Dry, arid areas, with long drought periods of 6-10 months, precipitations of 100-300 mm. are concentrated in winter; somewhat dry areas where the drought may last 3-5 months, precipitations of 400-800 mm. are concentrated in winter; humid areas, with almost constant rainfall, short dry periods are possible (generally not longer than 1 month). Fully exposed to the sun, level areas or slopes facing north; some shadow,s ome protection against direct sunlight, some shadow from vegetation, filtering about 20-40% of light" (Chileflora).

Propagation: Seed

Native range: Canary Islands, northern Africa, Europe, Asia; naturalized elsewhere, exact native range obscure (GRIN).

Presence:

Pacific

Country/Terr./St. &
Island group Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction? Reference &
Comments

Chile (offshore islands)
Juan Fernández Islands Isla Más a Tierra (Robinson Crusoe Island) introduced
invasive
Atkinson, Rachel/Sawyer, John (2011)

Chile (offshore islands)
Juan Fernández Islands Isla Más a Tierra (Robinson Crusoe Island) introduced
invasive
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 557)

Chile (offshore islands)
Juan Fernández Islands Isla Más Afuera (Alejandro Selkirk Island) introduced
invasive
Atkinson, Rachel/Sawyer, John (2011)

Chile (offshore islands)
Juan Fernández Islands Isla Más Afuera (Alejandro Selkirk Island) introduced
invasive
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 557)

Chile (offshore islands)
Juan Fernández Islands Morro El Verdugo introduced
invasive
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 557)

State of Hawaii
Hawaiian Islands Hawai‘i (Big) Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 356)
Voucher cited: Ewart III 178 (BISH)

State of Hawaii
Hawaiian Islands Maui Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 356)

Pacific Rim

Country/Terr./St. &
Island group Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction? Reference &
Comments

Australia
Australia (continental) New South Wales introduced
invasive
National Herbarium of New South Wales (2013)
"Weed of disturbed sites".

Australia
Australia (continental) Australia (continental) introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)

Australia
Australia (continental) Queensland introduced
invasive
National Herbarium of New South Wales (2013)
"Weed of disturbed sites".

British Columbia (province of Canada)
Province of British Columbia Canada (British Columbia) probably introduced
Flora of North America Editorial Committee, eds. (2013)

China
China China (People's Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)

Japan
Japan Japan introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Honshu

Japan
Japan Japan introduced
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 190)

North Korea
North Korea North Korea (Democratic People's Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)

South Korea
South Korea South Korea (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)

Mexico
Mexico Mexico (United Mexican States) introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)

New Zealand
New Zealand New Zealand (country) introduced
invasive
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 277)

South America (Pacific rim)
South America (Pacific rim) Chile (Republic of) introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)

South America (Pacific rim)
South America (Pacific rim) Chile (Republic of) introduced
invasive
Belov, Michail (2013)

South America (Pacific rim)
South America (Pacific rim) Colombia introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)

South America (Pacific rim)
South America (Pacific rim) Ecuador (Republic of) (continental) introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)

South America (Pacific rim)
South America (Pacific rim) Perú (Republic of) introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)

Taiwan
Taiwan Island Taiwan Island Ching-I Peng, ed. (2013)
Around villages, 2,000-2,500 m.

United States (west coast)
United States (west coast states) USA (Oregon) probably introduced
Flora of North America Editorial Committee, eds. (2013)

United States (west coast)
United States (west coast states) USA (California) probably introduced
Flora of North America Editorial Committee, eds. (2013)

United States (west coast)
United States (west coast states) USA (Washington) probably introduced
Flora of North America Editorial Committee, eds. (2013)

Also reported from

Country/Terr./St. &
Island group Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction? Reference &
Comments

Canada
Canada Canada probably introduced
Flora of North America Editorial Committee, eds. (2013)

United States (continental except west coast)
United States (other states) United States (other states) introduced
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)

United States (continental except west coast)
United States (other states) USA (Florida) probably introduced
Flora of North America Editorial Committee, eds. (2013)

Control: If you know of control methods for Senecio vulgaris, please let us know.

Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

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This page was created on 14 FEB 2011 and was last updated on 23 AUG 2011.

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Chile (offshore islands) Juan Fernández Islands	Isla Más a Tierra (Robinson Crusoe Island)	introduced invasive	Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands) Juan Fernández Islands	Isla Más a Tierra (Robinson Crusoe Island)	introduced invasive	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 557)
Chile (offshore islands) Juan Fernández Islands	Isla Más Afuera (Alejandro Selkirk Island)	introduced invasive	Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands) Juan Fernández Islands	Isla Más Afuera (Alejandro Selkirk Island)	introduced invasive	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 557)
Chile (offshore islands) Juan Fernández Islands	Morro El Verdugo	introduced invasive	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 557)
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 356) Voucher cited: Ewart III 178 (BISH)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 356)

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia Australia (continental)	New South Wales	introduced invasive	National Herbarium of New South Wales (2013) "Weed of disturbed sites".
Australia Australia (continental)	Australia (continental)	introduced	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Australia Australia (continental)	Queensland	introduced invasive	National Herbarium of New South Wales (2013) "Weed of disturbed sites".
British Columbia (province of Canada) Province of British Columbia	Canada (British Columbia)	probably introduced	Flora of North America Editorial Committee, eds. (2013)
China China	China (People's Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Japan Japan	Japan	introduced	U.S. Dept. Agr., Agr. Res. Serv. (2013) Honshu
Japan Japan	Japan	introduced	Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 190)
North Korea North Korea	North Korea (Democratic People's Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
South Korea South Korea	South Korea (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Mexico Mexico	Mexico (United Mexican States)	introduced	U.S. Dept. Agr., Agr. Res. Serv. (2013)
New Zealand New Zealand	New Zealand (country)	introduced invasive	Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 277)
South America (Pacific rim) South America (Pacific rim)	Chile (Republic of)	introduced	U.S. Dept. Agr., Agr. Res. Serv. (2013)
South America (Pacific rim) South America (Pacific rim)	Chile (Republic of)	introduced invasive	Belov, Michail (2013)
South America (Pacific rim) South America (Pacific rim)	Colombia	introduced	U.S. Dept. Agr., Agr. Res. Serv. (2013)
South America (Pacific rim) South America (Pacific rim)	Ecuador (Republic of) (continental)	introduced	U.S. Dept. Agr., Agr. Res. Serv. (2013)
South America (Pacific rim) South America (Pacific rim)	Perú (Republic of)	introduced	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Taiwan Taiwan Island	Taiwan Island		Ching-I Peng, ed. (2013) Around villages, 2,000-2,500 m.
United States (west coast) United States (west coast states)	USA (Oregon)	probably introduced	Flora of North America Editorial Committee, eds. (2013)
United States (west coast) United States (west coast states)	USA (California)	probably introduced	Flora of North America Editorial Committee, eds. (2013)
United States (west coast) United States (west coast states)	USA (Washington)	probably introduced	Flora of North America Editorial Committee, eds. (2013)

Also reported from
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Canada Canada	Canada	probably introduced	Flora of North America Editorial Committee, eds. (2013)
United States (continental except west coast) United States (other states)	United States (other states)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
United States (continental except west coast) United States (other states)	USA (Florida)	probably introduced	Flora of North America Editorial Committee, eds. (2013)