Whitman County > Agriculture > Plants > Weed Management

Weed of the Month

NOTE: Control of Ventenata With Imazapic PDF

NOTE: Invasive Weeds Of Eastern Washington PDF(large file)
To obtain multiple hard copies of "Invasive Weeds of Eastern Washington" please contact Steve Van Vleet or phone (509) 397-6290

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Email us at: Steve Van Vleet

Calendar Years 2010 2009 2008 2007 2006
CALENDAR YEAR
2011

JANUARY 2011 Common Teasel (Disacus fullonumL.)				FEBRUARY 2011 Curly Dock Rumex crispusL.)
MARCH 2011 Black Medic (Medicago lupulinaL.)				APRIL 2011 Bur Chervil (Anthriscus caucaisM. Bieb)

MAY 2011 Catchweed Bedstraw (Galium aparineL.)				JUNE 2011 Common Barberry (Berberis vulgarisL.)
JULY 2011 False Brome (Brachypodium sylvaticum(Huds.) P. Beau.)				AUGUST 2011 Silverleaf Nightshade (Solanum elaeagnifolium Cav.)
SEPTEMBER 2011 Common Crupina (Crupina vulgaris Cass.)				October 2011 Policeman's Helmet (Impations glandulifera) Royle
NOVEMBER 2011 Goat's Rue (Galega officinalis L.)				DECEMBER 2011 Syrian Beancaper (Zygophyllum fabago L.)

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CALENDAR YEAR
2010

JANUARY 2010 Tansy Ragwort (Senecio jacobaea L.)				FEBRUARY 2010 Russian Knapweed (Acroptilon repens(L.)
MARCH 2010 Himalayan Blackberry (Rubus armaniacusFocke)				APRIL 2010 Butterfly Bush (Buddleja davidiiFranch)
MAY 2010 Eurasian Watermilfoil (Myriophyllum spicatumL.)				JUNE 2010 Horsetail (Equisetum arvenseL.)
JULY 2010 Common Milkweed, (Asclepias syriacaL.)				AUGUST 2010 Hoary Alyssum (Berteroa incana(L.) DC)

SEPTEMBER 2010 Yellow Flag Iris (Iris pseudacorus)				October 2010 Western Poison Ivy Toxicodendron rydbergii(Small ex Rydb.)Greene
NOVEMBER 2010 Common Groundsel (Senecio vulgaris)				DECEMBER 2010 Parrotfeather (Myriophyllum aquaticum (Vell.) Verdc.)

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CALENDAR YEAR
2009

JANUARY 2009 Dyer's Woad (Isatis tinctoriaL.)				FEBRUARY 2009 Common Tansy (Tanecetum vulgareL.)
MARCH 2009 Medusahead (Taeniatherum caput- medusae(L)Nevski)				APRIL 2009 Common Burdock (Arctium minusBernh.)
MAY 2009 Lupine (Lupinus spp.L)				JUNE 2009 Indigobush (Amorpha fruticosaL.)
JULY 2009 Oxeye Daisy (Leucanthemum vulgare L.)				AUGUST 2009 Mahaleb Cherry (Prunus mahalebL.)

SEPTEMBER 2009 Buffalobur (Solanum rostratumDunal)				OCTOBER 2009 Mediterranean Sage (Salvia aethiopisL.)
NOVEMBER 2009 Garlic Mustard (Alliaria petiolata(M. Bieb.) Cavara & Grande)				DECEMBER 2009 Yellow Nutsedge (Cyperus esculentusL.)

For information & questions about weeds/control contact: Steve Van Vleet or Phone (509) 397-6290

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CALENDAR YEAR
2008

JANUARY 2008
Saltcedar
(Tamarix ramossiumaLedeb.)

FEBRUARY 2008
Ventenata
(Ventenata dubia(Leers) Durieu)

MARCH 2008
Black Henbane
(Hyoscyamus nigerL.)

APRIL 2008
Viper's Bugloss
(Echium VulgareL.)

MAY 2008
St. Johnswort
(Hypericum perforatumL.)

JUNE 2008
Russian Olive
(Elaeagnus angustifolisL.)

JULY 2008
Orange Hawkweed
(Hieracium aurantiacumL.)

AUGUST 2008
Horseweed
(Conyza Canadensis(L.)Cronq.)

SEPTEMBER 2008
Kochia
(Kochia scopariaL.)

OCTOBER 2008
Russian Thistle
(Salsola tragusL.,
Salsola australisR. Br.))

NOVEMBER 2008
Purple Loosestrife
(Lythrum salicariaL.)

DECEMBER 2008
Perennial Pepperweed
(Lepidium latifoliumL.)

For information & questions about weeds/control contact: Steve Van Vleet or Phone (509) 397-6290

Top of Page	CALENDER YEAR 2007
JANUARY 2007 White Bryony (Bryonia albaL.)		FEBRUARY 2007 Canada Thistle (Crisium arvenseL.)
MARCH 2007 Puncturevine (Tribulus terrestisL.)		APRIL 2007 Rush Skeletonweed (Chondrilla junceaL.)
MAY 2007 Field Bindweed (Convolvulus arvenisisL.)		JUNE 2007 Leafy Spurge (Euphorbia esulaL.)
JULY 2007 Spotted Knapweed (Centaurea maculosaLam.) Diffuse Knapweed (Centaurea diffuseLam.)		AUGUST 2007 Yellow Starthistle (Centaurea solstitialisL.)
SEPTEMBER 2007 Scotch Thistle (Onopordum aconthiumL.)		OCTOBER 2007 Sulfur Cinquefoil (Potentilla rectaL.)
NOVEMBER 2007 Italian Ryegrass (Lolium multiflorumLam.)		DECEMBER 2007 Hoary Cress (Cardaria draba(L.) Desv.)

For information & questions about weeds/control contact: Steve Van Vleet or Phone (509) 397-6290

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CALENDAR YEAR
2006

JANUARY 2006 Downy Brome (Bromus tectorumL.)				FEBRUARY 2006 Musk Thistle (Carduus nutansL.)
MARCH 2006 Dalmation Toadflax (Linaria dalmaticaL.) Yellow Toadflax (Linaria vulgarisL.)				APRIL 2006 Poison Hemlock (Conium maculatumL.)
MAY 2006 Common Fiddleneck (Amsinckia micranthaSuksd.)				JUNE 2006 Jointed Goatgrass (Aegilops cylindricaHost)
JULY 2006 Annual Sowthistle (Sonchus oleraceusL.)				AUGUST 2006 Mayweed Chamomile (Anthemis cotula L.)
SEPTEMBER 2006 Houndstongue (Cynoglossum officnaleL.)				OCTOBER 2006 Prickly Lettuce (Lactuca SerriolaL.)
NOVEMBER 2006 Scotch Broom (Cytisus scoparius L.)				DECEMBER 2006 Black Nightshade (Solanum americanumMiller)