Invasive Plants: Thistles

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Artichoke Thistle, Cardoon

Scientific Name: Cynara cardunculus

Native Look-Alikes: none

Additional Photos:

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Bull Thistle, Bullthistle

Scientific Name: Cirsium vulgare

Native Look-Alikes: Cobwebby thistle (Cirsium occidentalis)

Additional Photos:

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Distaff Thistle, Woolly Distaff Thistle

Scientific Name: Carthamus lanatus

Native Look-Alikes: Southern tarplant (Centromadia parryi)

Additional Photos:

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Italian Thistle

Scientific Name: Carduus pycnocephalus

Native Look-Alikes: Cobwebby thistle (Cirsium occidentalis)

Additional Photos:

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Milkthistle, Blessed Milkthistle, Milk Thistle

Scientific Name: Silybum marianum

Native Look-Alikes: Cobwebby thistle (Cirsium occidentalis)

Additional Photos:

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Red Star Thistle, Purple Star Thistle

Scientific Name: Centaurea calcitrapa

Native Look-Alikes: none

Additional Photos:

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Tocalote, Napa Star Thistle, Maltese Star Thistle, Malta Starthistle

Scientific Name: Centaurea melitensis

Native Look-Alikes: none

Additional Photos:

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Yellow Star Thistle, Barnaby’s Thistle

Scientific Name: Centaurea solstitialis

Native Look-Alikes: none

Additional Photos:

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