WSU Extension

Hortsense

Weeds
 
Annual bluegrass 
Barnyardgrass 
Bentgrass, creeping 
Bermudagrass 
Bittercress (Shotweed, Hairy bittercress) 
Bittersweet nightshade (European bittersweet) 
Black medic 
Blackberry (Himalayan, Evergreen, Pacific) 
Blue mustard (Purple mustard, Tenella mustard) 
Brackenfern, western 
Buffalobur 
Bull thistle 
Buttercup, creeping 
Canada thistle 
Catchweed bedstraw (Cleavers) 
Catsear, common (False dandelion) 
Chickweed, common and mouseear 
Clover 
Comfrey 
Crabgrass 
Dandelion 
Dock (Curly, Broadleaf) 
Dodder 
Downy brome (Cheatgrass, Downy chess) 
Dwarf mistletoes 
English daisy (Lawn daisy) 
English ivy 
Field bindweed (Wild morningglory) 
Field pennycress (Fanweed) 
Flixweed 
Foxtail (Green, Yellow, Bristly) 
Garden loosestrife 
Giant hogweed 
Goldenrods 
Groundsel, common 
Hawkweeds 
Hedge bindweed 
Henbit 
Herb Robert (Robert geranium, stinky Bob) 
Horsetails (Scouringrush) 
Horseweed (Marestail) 
Knapweeds 
Knotweeds (Bohemian, Giant, Japanese, Himalayan) 
Kochia 
Lambsquarters, common 
Liverworts 
Mallow, common (Cheeseweed, Buttonweed) 
Nightshades 
Oxalis (Creeping woodsorrel) 
Parrotfeather and Eurasian watermilfoil 
Pineappleweed 
Plantain (Broadleaf, Buckhorn) 
Poison hemlock 
Poison ivy and Poison oak 
Prickly lettuce (China lettuce) 
Prostrate knotweed 
Puncturevine (Tackweed, Goathead) 
Purple deadnettle (Red deadnettle) 
Purple loosestrife (Purple lythrum) 
Purslane, common 
Quackgrass 
Red sorrel (Sheep sorrel) 
Redroot pigweed (Rough pigweed) 
Redstem filaree (Stork's bill, Crane's bill) 
Reed canarygrass 
Russian thistle (Tumbleweed) 
Ryegrass, annual (Italian ryegrass) 
Salsify (Goatsbeard) 
Scotch broom 
Shepherd's-purse 
Smartweeds 
Sowthistle, annual and perennial 
Speedwells 
Spurges (Prostrate spurges) 
St. Johnswort, common (Goatweed, Klamathweed) 
Stinging nettle 
Tansy ragwort 
Tumblemustard (Jim Hill mustard) 
Velvetgrass (Common velvetgrass) 
Velvetleaf 
Water primrose 
Waterhemlock, western 
Yellow nutsedge 



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Caption: Broadleaf plantain
Photo by: R. Parker
  
Weeds : Plantain (Broadleaf, Buckhorn) : Plantago spp.
(revision date: 9/14/2015)

Family: Plantaginaceae
Cycle: Perennial
Plant Type: Broadleaf

Biology
Broadleaf plantain leaves are all basal, forming a low-growing rosette. Broadleaf plantain bears many fibrous roots, from which new plants can occasionally arise. The crown of broadleaf plantain is not woolly or hairy. The leaves have several prominent, parallel veins and may be lightly hairy. The leaf blade is typically three to seven inches long and one to two inches wide, abruptly narrowing where it joins the petiole, which may be as long as the leaves. The margins of the leaves are often wavy. Flowers are borne in dense clusters at the tip of leafless shoots which reach 5 to 15 inches tall. Individual flowers are inconspicuous and yellowish-white. Seeds are glossy light to dark brown and about 1/16 inch long. Buckhorn plantain leaves are all basal, in a rosette. Buckhorn plantain has a short, thick taproot with fibrous lateral roots. Older plants develop a thick underground stem which can occasionally produce new plants. The crown may be somewhat woolly or hairy, but the leaves are generally hairless or nearly so. The leaf blade is long (four to twelve inches) and narrow (up to 1 1/2 inches), tapering gradually into the petiole, which attaches to the crown. Three to five parallel veins are obvious on the leaf blades. Flowers are borne in dense clusters one or two inches long, on top of leafless shoots which may reach eighteen inches tall. Individual flowers are inconspicuous, but the stamens form an obvious ring around the spike as the flowers come into bloom. Seeds are shiny brown to black and about 1/16 inch long.
Habitat
Broadleaf plantain is often found in lawns, gardens, and other cultivated or disturbed areas including pastures and roadsides. Buckhorn plantain is often found in lawns, gardens, and other disturbed areas such as roadsides and pastures. It is especially common in poor or thin lawns in droughty areas. It is very difficult to control.

Management Options

Non-Chemical Management
  • Cultivation (rototilling or hoeing) will effectively eliminate plants.
  • Careful digging is useful to manage weed populations. However, digging can carry undesirable weed seed to the surface and foster further germination.
Select non-chemical management options as your first choice!

Chemical Management

Apply according to label directions. Glyphosate products should be applied as spot treatments only! NOTE: Some ingredients listed here are only available in combination. Read the label carefully on combination products to make sure the product is suitable for your specific situation.

Landscape areas
  • glyphosate
  • dichlobenil
Turf areas
  • products containing 2,4-D
  • triclopyr
  • 2,4-D + MCPP + dicamba
Bare ground areas
  • glyphosate
  • products containing 2,4-D
  • triclopyr
Images

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Caption: Broadleaf plantain
Photo by: R. Parker
Caption: Buckhorn plantain
Photo by: R. Parker
Caption: Broadleaf plantain flowers
Photo by: D.G. Swan
Caption: Buckhorn plantain flowers
Photo by: T. W. Miller
Caption: Buckhorn plantain
Photo by: T. W. Miller
Caption: Broadleaf plantain rosette
Photo by: T. W. Miller