VIRTUAL FIELD GUIDE >> Noxious Weed List

Noxious Weed List 

This Noxious Weed List contains information about Idaho's 67 noxious weeds. Just click on the name of a weed you want more information on. You will then be given the best control methods available to manage that weed and links to other sources for more education and information.

• Black Henbane
  Hyoscyamus niger
• Bohemian Knotweed
  Polygonum bohemicum
• Brazilian Elodea
  Egeria densa
• Buffalobur
  Solanum rostratum
• Canada Thistle
  Cirsium arvense
• Common Crupina
  Crupina vulgaris
• Common/European Frogbit
  Hydrcharis morsus-ranae
• Common Reed (Phragmites)
  Phragmites australis
• Curlyleaf Pondweed
  Potamogeton crispus
• Dalmatian Toadflax
  Linaria genistifolia ssp. dalmatica
• Diffuse Knapweed
  Centaurea diffusa
• Dyer's Woad
  Isatis tinctoria
• Eurasian Watermilfoil
  Myriophyllum spicatum
• Fanwort
  Cobomba caroliniana
• Feathered Mosquito Fern
  Azolla pinnata
• Field Bindweed
  Convolvulus arvensis
• Flowering Rush
  Butomus umbelltus
• Giant Hogweed
  Heracleum mantegazzianum
• Giant Knotweed
  Polygonum sachalinense
• Giant Salvinia
  Salvinia molesta
• Hoary Alyssum
  Berteroa incana
• Hoary Cress (Whitetop)
  Lepidium draba ssp. draba
• Houndstongue
  Cynoglossum officinale
• Hydrilla
  Hydrilla verticillata
• Iberian Starthistle
  C. iberica
• Japanese Knotweed
  Polygonum cuspidatum
• Johnsongrass
  Sorghum halepense
• Jointed Goatgrass
  Aegilops cylindrica
• Leafy Spurge
  Euphorbia esula
• Matgrass
  Nardus stricta
• Meadow Hawkweed
  Hieracium caespitosum
• Meadow Knapweed
  Centaurea debeauxii ssp. thuillieri
• Mediterranean Sage
  Salvia aethiopis
• Milium
  Milium vernale

• Musk Thistle
  Carduus nutans
• Orange Hawkweed
  Hieracium aurantiacum
• Oxeye Daisy
  Chrysanthemum leucanthemum
• Parrotfeather Milfoil
  Myriophyllum aquaticum
• Perennial Pepperweed
  Lepidium latifolium
• Perennial Sowthistle
  Sonchus arvensis
• Plumeless Thistle
  Carduus acanthoides
• Poison Hemlock
  Conium maculatum
• Policeman's Helmet
  Impatiens glandulifera
• Puncturevine
  Tribulus terrestris
• Purple Loosestrife
  Lythrum salicaria
• Purple Starthistle
  Centaurea calcitrapa
• Rush Skeletonweed
  Chondrilla juncea
• Russian Knapweed
  Acroptilon repens
• Saltcedar
  Tamarix ssp.
• Scotch Broom
  Cytisus scoparius
• Scotch Thistle
  Onopordum acanthium
• Small Bugloss
  Anchusa arvensis
• Spotted Knapweed
  Centaurea stoebe ssp. micranthos
• Squarrose Knapweed
  Centaurea triumfetti
• Syrian Beancaper
  Zygophyllum fabago
• Tall Hawkweed
  Hieracium piloselloides
• Tansy Ragwort
  Senecia jacobaea
• Variable-Leaf-Milfoil
  Myriophyllum heterophyllum
• Vipers Bugloss
  Echium vulgare
• Water Chestnut
  Trapa natans
• Water Hyacinth
  Eichhornia crassipes
• White Bryony
  Bryonya alba
• Yellow Devil Hawkweed
  Hieracium glomeratum
• Yellow Flag Iris
  Iris psudocorus
• Yellow Floating Heart
  Nymphoides pelata
• Yellow Starthistle
  Centaurea solstitialis
• Yellow Toadflax
  Linaria vulgaris