Home
Absinth wormwood
Alligatorweed
American
Lotus
American
Pondweed
Ampelopsis
Australian
Pine
Baccharis
Bamboo
Banana
Passionflower
Barnyard Grass
Bermuda
Grass
Birdsfoot
Deervetch
Black Locust
Black
Mustard
Blue
Lettuce
Brazilian
Elodea
Brazilian
Peppertree
Bufflegrass
Bull
Thistle
Bulrush
Burdock
Buttonbush
Canada
Thistle
Cattails
Cheatgrass
Cherry
Silverberry
Chinaberry
Chineese Lespedeza
Chinese Bush Clover
Chinese Privete
Chinese
Tallow Tree
Climbing
Hempweed
Cogon Grass
Common Buckthorn
Common
Cocklebur
Common
Reed
Common Sowthistle
Coontail
Cottonwood
Crownvetch
Curlyleaf
Pondweed
Dalmation
Toadflax
Diffuse
Knapweed
Duckweed
Dyer's
Woad
Elephant Ears
Elodea
English Ivy
Eurasian
Watermilfoil
European
Stickseed
Field
Bindweed
Field
Mustard
Field
Sowthistle
Floating Heart
Floating
Primrose
Flowering Rush
Fragrant
Water-Lilly
Gallant
Solder
Garlic Mustard
Giant
Foxtail
Giant
Reed
Giant
Salvinia
Glossy Buckthorn
Gorse
Halogeton
Hempnettle
Himalayan
Raspberry
Hoary
Cress
Horsenettle
Horseweed
Houndstongue
Hydrilla
Ivy
Gourd
Japanese Barberry
Japanese knotweed
Johnson
Grass
Jointed Goatgrass
Klamath
Weed
Kochia
Koster's
Curse
Kudzu
Leafy
Spurge
Limnophila
Longspine
Sandbur
Malaleuca
Medusahead
Miconia
Mimosa
Miramar Weed
Multiflora
Rose
Musk
Thistle
Nepalese Brown Top
Norway Maple
Old World Climbing Fern
Orange Hawkweed
Oxeye
Daisy
Pale Yellow Iris
Paper Mulberry
Para
Grass
Parrotfeather
Perenial
Pepperweed
Periwinkle
Plumeless
Thistle
Poison
Hemlock
Porcelainberry
Princess Tree
Puncturevine
Purple
Loosestrife
Purple
Starthistle
Pupletop Vervain
Quackgrass
Queen
Anne's Lace
Redroot
Pigweed
Reed
Canarygrass
Rice
Cut-Grass
Riviere Golden Bamboo
Russian
knapweed
Russian
Thistle
Salvinia minima
Scotch Broom
Scotch
Thistle
Skeleton
Weed
Slender
Naiad
Smartwed
Smooth
Brome
Southern
Naiad
Spatter-Dock
Spiny
Naiad
Spotted
Knapweed
Strawberry Guava
Sulfur cinquefoil
Sunflower
Swallowworts
Tamarisk/Salt
Cedar
Tansy Ragwort
Teasel
Texas
Blueweed
Torpedo
Grass
Tree of Heaven
Tropical Soda Apple
Tumble
Pigweed
Uruguayan
Primrose
Variable-Leaf
Milfoil
Water
Buttercup
Water
Chestnut
Water
Moss
Water
Paspalum
Water
Shield
Water
Hyacinth
Water
Lettuce
Water
Willow
Western
Water Hemlock
White
Sweetclover
Whitetop
Wild
Mustard
Wild Parsnip
Willows
Yellow
Nutsedge
Yellow
Starthistle
Yellow
Toadflax
Spotted
Knapweed - Centaurea biebersteinii
Family: Asteraceae
This plant has been filmed but is not available on the web.
Description
Spotted Knapweed is a biennial plant that has purplish colored flowers. Its leaves are alternate, and covered with translucent dots ... thus, giving it its name. This plant does not spread via runners, but instead only by seeds.
Similar species to spotted knapweed include canada thistle, diffuse knapweed, russian knapweed and yellow starthistle.
Interesting facts
Spotted Knapweed was introduced in 1893 from Europe into Victoria, BC. Since then it has spread across most of the united states and is reason for great concern. It is particularly troublesome in the Northwestern United States and British Columbia.
Links to more information
-
Overview of the plant and control procedures - North Dakota State University
-
Invasive-Species.org - gateway to activity on the state and government level with Spotted Knapweed.
-
Montana Weed control bulletin - Biology, history, management of Spotted Knapweed.
Website, video, and graphics by Rob Nelson
For more information on this plant or management please contact US Army Corp of Engineers
Spotted Knapweed Video
|
|
Was this handy? Share this page with friends.
