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: Ivyleaf speedwell
Photo by: T.W. Miller
  
Weeds : Speedwells : Veronica spp.
(revision date: 4/5/2016)

Family: Scrophulariaceae
Cycle: Annual/Perennial
Plant Type: Broadleaf

Biology
Three of the speedwell species common in the Pacific Northwest are very similar in appearance. Ivyleaf speedwell (Veronica hederifolia), Persian speedwell (V. persica), and creeping speedwell (V. filiformis) are prostrate to weakly upright with small, opposite leaves on short petioles. Persian speedwell is a mat-forming winter annual which roots at the nodes. Leaves are rounded with coarse teeth and the seed capsules are flattened with a notch at the top. Ivyleaf speedwell has lobed leaves with a larger center lobe than the other species. Seed capsules are circular and flattened. Creeping speedwell is an annual to perennial plant that is mat-forming and difficult to eradicate. The rounded leaves are broad and toothed and the seed capsules are hairy. All three species are finely hairy on leaves and stems and have small purplish to blue, four-petalled flowers borne singly in the leaf axils. SPECIAL INFORMATION: Speedwells are tolerant of many herbicides, making them difficult to control.
Habitat
Speedwells may be found in many sites. These species may be found in gardens, waste and cultivated areas, and lawns.

Management Options

Non-Chemical Management
  • Cultivation (rototilling or hoeing) will effectively eliminate plants.
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! There is a product available to licensed applicators for application to effectively control speedwell without damaging the turfgrass (DCPA). 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
Turf areas
    Bare ground areas
    • glyphosate
    Images

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    Caption: Ivyleaf speedwell
    Photo by: T.W. Miller
    Caption: Ivyleaf speedwell
    Photo by: T.W. Miller
    Caption: Speedwell
    Photo by: G. Stahnke
    Caption: Speedwell
    Photo by: T. W. Miller
    Caption: Speedwell invading pasture
    Photo by: G. Stahnke