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Troublesome Invaders of the Western US and Canada: A-L

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Absinth Wormwood

Absinth wormwood
(Artemisia absinthium)

Also known as: Common wormwood

Species Identification and Characteristics

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African Rue

African rue
(Peganum harmala)

Also known as: Harmal peganum, Syrian rue

Species Identification and Characteristics

Management and Control Resources

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Bermudagrass

Bermudagrass
(Cynodon dactylon)


Species Identification and Characteristics

Management and Control Resources

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Black Henbane

Black henbane
(Hyoscyamus niger)


Species Identification and Characteristics

Management and Control Resources

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Blueweed

Blueweed
(Echium vulgare)

Also known as: Viper's bugloss, Bluethistle, Snake-flower, Bluestem, Blue devils

Species Identification and Characteristics

Management and Control Resources

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Brazilian Egeria

Brazilian egeria
(Egeria densa)

Also known as: Brazilian waterweed, Elodea

Species Identification and Characteristics

Management and Control Resources


Buffalobur

Buffalobur
(Solanum rostratum)

Also known as: Spiny nightshade

Species Identification and Characteristics

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Buffelgrass

Buffelgrass
(Pennisetum ciliare)


Species Identification and Characteristics

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Camelthorn

Camelthorn
(Alhagi maurorum)


Species Identification and Characteristics

Management and Control Resources

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CanadaThistle

Canada thistle
(Cirsium arvense)


Species Identification and Characteristics

Management and Control Resources

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Cheatgrass

Cheatgrass
(Bromus tectorum)

Also known as: Downy brome

Species Identification and Characteristics

Management and Control Resources

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Common Burdock

Common burdock
(Arctium minus)

Also known as: Wild rhubarb, Bardane, Beggar's button, Wild burdock

Species Identification and Characteristics

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Common Crupina

Common crupina
(Crupina vulgaris)

Also known as: Bearded creeper

Species Identification and Characteristics

Management and Control Resources

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Common Tansy

Common tansy
(Tanacetum vulgare)

Also known as: Golden buttons, Garden tansy

Species Identification and Characteristics

Management and Control Resources

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Dalmatian Toadflax

Dalmatian toadflax
(Linaria dalmatica)


Species Identification and Characteristics

Management and Control Resources

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Didymo

Didymo
(Didymosphenia geminata)

Also Known As: Rock snot


Resources

Videos

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Diffuse Knapweed

Diffuse knapweed
(Centaurea diffusa)


Species Identification and Characteristics

Management and Control Resources

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Dyers Woad

Dyer's woad
(Isatis tinctoria)


Species Identification and Characteristics

Management and Control Resources

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Eurasian Watermilfoil

Eurasian watermilfoil
(Myriophyllum spicatum)

Also known as: Spiked watermilfoil

Species Identification and Characteristics

Management and Control Resources

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Field Bindweed

Field bindweed
(Convolvulus arvensis)

Also known as: Wild morning glory, Creeping Charlie, Perennial morning glory

Species Identification and Characteristics

Management and Control Resources

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Flowering Rush

Flowering rush
(Butomus umbellatus)

Also known as: Grassy rush, Water gladiolus

Species Identification and Characteristics

Management and Control Resources

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Garlic Mustard

Garlic mustard
(Alliaria petiolata)

Also known as: Hedge garlic, Garlic root, Poor man's mustard, Garlic wort

Species Identification and Characteristics

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Giant Reed

Giant reed
(Arundo donax)

Also known as: Arundo, Spanish reed, Wild cane

Species Identification and Characteristics

Management and Control Resources

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Giant Salvinia

Giant salvinia
(Salvinia molesta)

Also known as: Salvinia, Water fern

Species Identification and Characteristics

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Himalayan Blackberry

Himalayan blackberry
(Rubus armeniacus, R. discolor)


Species Identification and Characteristics

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Hoary Alyssum

Hoary alyssum
(Berteroa incana)


Species Identification and Characteristics

Management and Control Resources

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Horsenettle

Horsenettle
(Solanum carolinense)

Also known as: Carolina horsenettle

Species Identification and Characteristics

Management and Control Resources

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Houndstongue

Houndstongue
(Cynoglossum officinale)

Also known as: Gypsyflower

Species Identification and Characteristics

Management and Control Resources

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Hydrilla

Hydrilla
(Hydrilla verticillata)

Also known as: Florida elodea, Water thyme, Indian star-vine

Species Identification and Characteristics

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Japanese Knotweed

Japanese knotweed
(Polygonum cuspidatum, Fallopia japonica)

Also known as: Japanese bamboo, Mexican bamboo, Fleeceflower

Species Identification and Characteristics

Management and Control Resources

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Johnsongrass

Johnsongrass
(Sorghum halepense)


Species Identification and Characteristics

Management and Control Resources

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Jointed Goatgrass

Jointed goatgrass
(Aegilops cylindrica)


Species Identification and Characteristics

Management and Control Resources

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Knotweed Complex

Knotweed complex
(Polygonum spp.)


Species Identification and Characteristics

Management and Control Resources

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Leafy Spurge

Leafy spurge
(Euphorbia esula)


Species Identification and Characteristics

Management and Control Resources

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Lehmann Lovegrass

Lehman lovegrass
(Eragrostis lehmanniana)


Species Identification and Characteristics

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