Grower's Call us 1-844-567-9909 1-844-567-9909 Scientific literature on the control of corn speedwell in corn is limite… Tables 1 is based on a summary of 1 field trial in winter wheat. A larger species called germander speedwell (V. chamaedrys) produces showier flowers, and sometimes escapes into lawns from beds in which it is grown as a ground cover. I dug into the topic some and found that mecoprop is about the best type of herbicide you can use on speedwell. You must have JavaScript enabled in your browser to utilize the functionality of this website. Individual leaves on lower stems are approximately ½ to ¾-inch long, mostly oval, with serrated margins. Herbicide Control in Field Corn. Preventing Regrowth. Apply 3.25 to 4 pints per acre on cool season turf including species of bluegrass, ryegrass, fescue, and bentgrass (excluding greens and tees). linuron (LOROX) and primisulfuron/dicamba (SUMMIT) provide effective to Problem Weed Index Page. Two characteristics that most have in common are four-petaled blue or white flowers and heart-shaped seed pods. With two modes of action, Keystone NXT controls a wide spectrum of annual grasses and small-seeded broadleaf weeds. Stems have an up-right growth habit and do not spread more than an inch or two … Keystone ® NXT † herbicide is an effective solution for farmers seeking early season weed control in corn. Cornell Univ. in late autumn or early spring and flowers in late June and then Persian speedwell (Veronica persica), also called veronica speedwell, is a low-growing winter annual weed found in turf, nursery crops, and waste areas. This is the CROP version of a web tool to aid in the herbicide selection process by listing herbicides and the weeds listed on their labels for application on within the major crops grown in Indiana. This species can be found growing in moist or dry soils, in full sun or shade, and where turf is thin. soybeans. Rates used in this trial are listed in OMAF Publication 75 - Guide How effective Trimec Southern Broadleaf Herbicide on corn speedwell? Corn Speedwell is quite common and it can be found in every county of Illinois. This species was recently evaluated in a 2004 field trial, but not One application should be enough for the herbicide to absorb into the tiny leaves and kill the root structure of the weeds. control of Corn speedwell. hairy on both sides with margins that have slightly rounded teeth. Corn speedwell (Veronica arvensis L.) is a member of the plantain family (Plantaginaceae) and has a winter annual life cycle. This site offers lawn care information that is for educational purposes only. Q&A related to Speedwell. Leaves are arranged opposite to one another on lower stems and form clusters on elevated stems. This little weed was introduced accidentally from Europe. The leaves are small, were a considerable problem in many of the cereal crops. Dimension 2EW Herbicide. Use COC in mixtures with atrazine; use NIS in mixtures with Banvel or Clarity. A three-way herbicide (one that has 3 herbicides in one product) and herbicides containing triclopyr provide some post-emergence control for henbit and speedwell. Corn speedwell was at 5-10 cm in height at the time of application. Table 1 is based on a summary of 1 field trial planted to no-till Corn speedwell (Veronica arvensis L.) is a member of the plantain family (Plantaginaceae) and has a winter annual life cycle. is a common weed that infests lawns and gardens throughout the U.S. Single flowers develop in leaf axils near the tips of elevated stems. 1997. At that time "speedwells" Corn speedwell, also called rock speedwell or wall speedwell, is a common weed of home lawns, parks, institutional grounds, and other turf areas in Pennsylvania. is a common weed that infests lawns and gardens throughout the U.S. Use a selective post-emergence herbicide taking care to follow spray intervals for newly seeded areas. How effective Trimec Southern Broadleaf Herbicide on corn speedwell? The lower leaves are more rounded, and the upper leaves pointed. experiments with herbicides in maize. Will Crabgrass Control Plus 0 - 0 - 7 with 0.37% Prodiamine Herbicide work to control corn speedwell? Corn Speedwell Pictures About corn speedwell (Saric et al., 1975). Buctril M) combination. Results from this single Skip to content Ontario.ca It does not completely crowd out desirable grass, however. Speedwells can grow in a variety of situations, but are mostly found in shady areas with dry, sandy, or rocky soils. mecoprop, dichlorprop or high rates of MCPA generally provided acceptable In a few years, it can spread from a few patches to cover the entire lawn. DiThomaso. Will Crabgrass Control Plus 0 - 0 - 7 with 0.37% Prodiamine Herbicide work to control corn speedwell? Slender speedwell (Veronica filiformis) is a low-growing plant with bright blue, long-stemmed flowers early in the year, usually March to May.It is low-growing and can form dense patches in a lawn. : A low growing plant with upright stems covered with fine hairs. Figure 2. Corn speedwell is a winter annual weed that is classified by herbicide manufacturers as hard to control. Prevalence of corn speedwell can be reduced by increasing turf density through nitrogen fertilization, regular mowing, and the use of turfgrasses well-adapted to site conditions. blue-violet flowers (with 4 pedals) and the rounded, heart shaped Results from this single trial would indicate that glyphosate (for Roundup Ready corn only), linuron (LOROX) and primisulfuron/dicamba (SUMMIT) provide effective control of corn speedwell (Table 1). The most prevalent speedwell species in Michigan is corn speedwell, which is a winter annual. Product Details over a four month period in the United Kingdom. 397 pp. Entering your postal code will help us provide news or event updates for your area. Corn speedwell is an upright, clumping winter annual that produces small purple flowers in the spring. To control speedwell in garden beds, spot treat with Weed Weapon Extra Strength, Rapid Action or Weed Weapon Natural Power. The best time to spray is in spring. Saric, T., Numic, R. and N. Hadzihajdic. A three-way herbicide (one that has 3 herbicides in one product) and herbicides containing triclopyr provide some post-emergence control for henbit and speedwell. EXTRA. His results are consistent with the Speedwell produces numerous slender branches that spread and root quickly at the nodes, creating a dense carpet. Do not rely on this site as a substitute or replacement for professional advice or the information co Will germinate these or other products, as well as any other effective management Most corn is no longer cultivated as more growers use no-till methods and more effective herbicide programs are available. QuickSilver T&O Herbicide. It is a well-known weed that you can find in your front yard, backyard, or garden. This weed reproduces via seeds, which germinate during cool, moist conditions in late summer, fall, or spring. 1975. If corn speedwell covers a large area a pre emergent herbicide can be used in fall to prevent the seeds from germinating. Corn Speedwell is a winter annual broadleaf weed that is also referred to as Rock Speedwell, Wall Speedwell or its scientific name, Veronica arvensis. A scientific literature search on the control of corn speedwell Probably about 2 weeks before, to two weeks after your first frost. See all videos. and forage crops as well as lawns and roadsides.. I think you will have good luck if you spray thoroughly in the fall. Fragmenta Herbologica Jugoslavica. Corn speedwell only spreads by seed and is very aggressive in stressed thin and newly seeded turfgrass stands or other areas with exposed bare ground such as landscape beds that are not mulched. Germander Speedwell mostly grows low to the ground but if left to get out of hand, can grow to 50cm tall on hairy stems. This weed can be suppressed or controlled with various preemergence and postemergence herbicides. Research that he spoke with believed that they were getting better control Lower and middle leaves are opposite, broadly egg-shaped, hairy, short-stalked with rounded teeth along the margins. Speedwell produces numerous slender branches that spread and root quickly at the nodes, creating a dense carpet. Cornell Univ. Does Drive kill other weeds as well as crabgrass, such as clover, creeping charlie, etc? Control speedwell by using good cultural practices, removing the flowerheads before the flowers bloom and, in the most difficult cases, using herbicides. to Weed Control. This weed reproduces via seeds, which germinate during cool, moist conditions in late summer, fall, or spring. UPDATE: In 2004, Dr. François Tardif and Mike Cowbrough For more information, refer to Page 195 in OMAF Publication Publications Leaves on elevated stems are shorter and narrower than lower leaves, generally, do not have serrated margins, and are pointed at the tip. Lush and thick green lawns choke out the corn speedwell weeds and will prevent the weeds from getting re-established in your yard. corn speedwell Veronica arvensis. There are several herbicides you can use that have proven to be effective at killing corn speedwell weeds. Weed Weapon is systemic and kills weeds down to the roots within 2-4 days and is an ideal product for use around established trees and shrubs. strategies. Leaves. at application. Photo by Peter Landschoot, Penn State. Chemical control may be needed to eliminate invading corn speedwell, especially in turfgrass areas which are thin, or in newly seeded areas. Leaves of corn speedwell are hairy, oval, and opposite one another on lower stems. Kinda late I know, but I had the same issue, and the same results with WBG. Flowers of corn speedwell arising from leaf axils. Uva, R.H., J.C. Neal, and J.M. **Clopyralid-containing products should not be used on residential lawns but can be used for treating weeds in non-residential turf. Table 8-7. All leaf and stem surfaces are hairy. We want your feedback. as the target species and in a non-crop situation, therefore only Sword, Target), Infiintata de doi cetateni belgieni, Jan Demeyere si Didier Balcaen, care s-au indragostit de Europa de Est in general si de Romania, in special, in urma cu mai bine de un deceniu, Speedwell isi propune sa dezvolte proiecte imobiliare cu Pasiune. date for this page, please contact the webmaster at -internet.webmaster.omafra@ontario.ca, Crop and Pest Updates, Events, What's Hot, Agricultural Information Contact Centre 1-877-424-1300, glyphosate (2 L/ac - Roundup Ready Corn speedwell Dr. François Tardif, University of Guelph. News Agriculture Active ingredients and products in bold type contain a specific reference to corn speedwell on the label. Corn Speedwell thrives throughout most of the United States. corn only), glyphosate (1 L/ac) + CLASSIC - Roundup Apply 3.25 to 4 pints per acre on cool season turf including species of bluegrass, ryegrass, fescue, and bentgrass (excluding greens and tees). I think it is a winter annual. Veronica arvensis L.. Scrophulariaceae (Figwort family) Life cycle. 1; Herbicide Adjuvant and Rate 2; Accent: COC at 1% or NIS at 0.25 to 0.5%; COC is generally more effective. in winter wheat (see Table 1). Speedwell (Veronica spp.) Speedwell (Veronica spp) is an annual weed that spreads through lawns and borders, and has attractive tiny blue flowers. Atrazine is cited as providing excellent control of Products labeled to treat Corn Speedwell. Veronica (speedwell) is a very difficult weed. control of corn speedwell (Table 1). rock speedwell. 01:32. control of corn speedwell (Table 1). Selections that have an efficacy rating of 'Labelled' have weeds that appear on the herbicide's label. Eraser 41% Weed Killer Herbicide. If corn speedwell covers a large area a pre emergent herbicide can be used in fall to prevent the seeds from germinating. Prostrate, spreading winter annual. Corn speedwell produces branching stems which grow close to the ground in prostrate fashion, then turn upright, giving rise to flowers. Once corn speedwell appears in the spring a post emergent herbicide an be effective is used in early when growth is vigorous. Scientific literature on the control of corn speedwell in corn Each thumbnail image links to a larger image. It is inactive in the soil so planting can be safely carried out soon after treatment. Photo by Peter Landschoot, Penn State, Figure 3. Will crabgrass control plus 0 0 7 with 0 37 prodiamine herbicide work to control corn speedwell. It often grows in large, dense patches and is very conspicuous during spring and early summer. Other labels list speedwell but do not specify the individual species. Weeds 2nd ed. has erect stems that spread from the base. Rural Get notified when we have news, courses, or events of interest to you. Food Will Prodiamine 65 WDG work on speedwell growing in a lawn? corn speedwell. Plants produce vegetative growth and flowers from early spring through summer. Weed B Gon works best on speedwell when the plants are young and actively growing. experiment in 2003 that evaluated the control of Corn speedwell The many different species vary in appearance. Corn Speedwell reproduces with another useful identifier: distinctively heart-shaped seeds. Table 1 is based on a summary of 1 field trial with no grown crop. Ready soybean only). Dr. Peter Sikkema, Ridgetown College, University of Guelph. Very limited work has been done on corn speedweel control in Ontario. Corn speedwell is prominent throughout Ontario primarily in cereal 4 to 5 … The most distinguishable characteristic of corn speedwell is its instead of the popular bromoxynil/MCPA (i.e. This species was recently evaluated in a 2004 field trial, but not as the target species and in a non-crop situation, therefore only a handful of corn herbicides were evaluated. 4 to 5 pints per acre needed to … Stage of the species was unkown since it wasn't the target species As with other speedwell species, each flower has two stamens and a single style. However, cultivation can supplement chemical control, and used alone it may be sufficient for light weed infestations. view photos. Lower and middle leaves are opposite, broadly egg-shaped, hairy, short-stalked with rounded teeth along the margins. Small flowers of white to blue in the leaf axis. Roundup QuikPRO. Corn speedwell – Veronica arvensis. It can be applied from early preplant to 11-inch-tall corn. Life Cycle. Upper leaves are small and taper to a point, whereas lower leaves are rounded and lobed. Let us know what you have experienced with Ranger Pro Herbicide. as the target species and in a non-crop situation, therefore only again in Autumn. Another one of the Speedwell species, Germander Speedwell, or Veronica Chamaedrys goes by a few names including ‘Cats Eye’ and ‘Birds Eye’. Small, narrow, bractlike upper leaves are alternate and without petioles. The herbicides traditionally used to kill the weeds includes a mixture of the following chemicals in them: Atrazine; Metsulfuron; Trifloxysulfuron; Quincloric Fortunately I stumbled across Speedzone (5.8% or so) of MCPP and it really knocked that speedwell for a loop. Fruits are heart-shaped, hairy, and contain yellow seeds. wall speedwell. Pendulum AquaCap Herbicide 2.5 Gallon. View our privacy policy. LEARN HOW TO STOP THE INVASIVE SPOTTED LANTERNFLY, Coronavirus: Information and resources for the Extension Community. Appearance. Annual or winter annual reproducing only by seed. In the mid-1990's, Mike Cowbrough scouted barley and wheat fields *Follow label precautionary statements, restrictions, and directions regarding tolerant turfgrass species, rates, and timing of applications. Very limited work has been done on corn speedwell control in Ontario. Speedwell, also called creeping Veronica, was originally used as a rock garden plant but has become a weed, invading lawns and flower beds. Press. single trial would indicate that glyphosate (for Roundup Ready soybean The lower, non-flower, portion of the plant has leaves that are round-to-oblong with rounded teeth on the margin in an opposite arrangement. The results of 5-year Once corn speedwell appears in the spring a post emergent herbicide an be effective is used in early when growth is vigorous. Accessing this message means you do not have a JavaScript enabled browser. The variety Veronica Americana is edible and nutritious and has been used in a tea to alleviate symptoms of allergies and asthma. One plant can produce between 50 to 100 seeds. Habitats include scrubby savannas with sparse ground vegetation, rocky glades, fields, lawns and gardens, grassy areas along roads, and barren waste ground. No.55, pp.14. In Ontario, Peter Sikkema (Ridgetown College) conducted a field ... How Preen Natural Vegatable Garden Weed Preventer Works. is limited. Q&A related to Speedwell. But, depending on the variety, it is also a ground cover and is planted for its edible and medicinal properties. Muenscher, W.C., 1987. Weed Characteristics. Corn speedwell is an upright, clumping winter annual that produces small purple flowers in the spring. Very limited work has been done on corn speedwell control in Ontario. Will Prodiamine 65 WDG work on speedwell growing in a lawn? in soybean came up with no information. By entering your email, you consent to receive communications from Penn State Extension. cannot enable JavaScript in your browser and would like to know the last modified Speedwell - Constant Vigilance is the road to Excellence. However, disturbed areas are preferred, including lawns and gardens. It is not usually found in thick, healthy lawns but can be a problem in thin, weak grass stands and newly seeded areas; where it is capable of forming dense mats. Results from this Adjuvant recommendations for corn herbicides applied at burndown or postemergence. Very limited work has been done on corn speedwell control in Ontario. Herbicide Use. Roundup Pro Max. Corn Speedwell (Veronica arvensis) What does it look like? It can be differentiated from common speedwell by the following characteristics (Figure 2): erect stems (a), spreading from the base; lowermost leaves opposite with short stalks, middle ones stalkless, ovate or … Winter annuals complete their lifecycle in the spring after flowering and producing seed. only), linuron (LOROX) and metribuzin (SENCOR) provide effective The many different species vary in appearance. The weed control efficacy ratings are compiled from several Midwest sources. 397 pp. that contained MCPA, mecoprop and dicamba (i.e. The leaves are in opposite pairs, have prominent veins and heavily toothed edges. observed 91% control of corn speedwell plots sprayed with REFINE This broadleaf weed grows in rocky glades, fields, barren wastelands, grassy areas and alongside roads. Contact, Return The lower, non-flower, portion of the plant has leaves that are round-to-oblong with rounded teeth on the margin in an opposite arrangement. It spreads by seed in spring and autumn to form plants with strong tap roots. Two characteristics that most have in common are four-petaled blue or white flowers and heart-shaped seed pods. JavaScript seems to be disabled in your browser. in previous years when they had been using three way herbicide mixes Flowers are small, ¼ to ½-inch across, with blue petals and dark-blue stripes. Corn speedwell (Veronica arvensis) Corn speedwell is a low-growing winter annual weed. Why do we need this? Videos. Leaves on the upper portion of elevated stems are narrow, hairy, with pointed tips. Apply an herbicide now, and the speedwell will be dead and gone in two to three weeks. How Preen Prevents Weeds. A corn gluten herbicide, applied in early spring, will reduce germination of speedwell seeds. Highly disturbed areas are preferred. This species was recently evaluated in a 2004 field trial, but not 505 - Ontario Weeds. Corn speedwell (Veronica arvensis L.) is an annual. trial would indicate that glyphosate (for Roundup Ready corn only), Speedwell (Veronica spp.) seedpods. SpeedZone Southern Herbicide. This species was recently evaluated in a 2004 field trial, but not as the target species and in a non-crop situation, therefore only a handful of corn herbicides were evaluated. a handful of corn herbicides were evaluated. Speedwell is also called birdseye and gypsyweed. See All Pest, Disease and Weed Identification, See All Beer, Hard Cider, and Distilled Spirits, See All Community Planning and Engagement, Snow Removal from Synthetic In-Filled Systems, Using Composts to Improve Turf Performance, Suppression of Annual Bluegrass or Crabgrass, Tips to Improve Your Lawn Care Program This Fall, Common Pokeweed Identification and Management, Oxadiazon 2G, Oxadiazon SC, Ronstar FLO, Ronstar G, Clean Amine, Hardball, Weedar 64, WEEDestroy AM-40, others, 2,4-D, fluroxypyr, triclopyr, and flumioxazin, 2,4-D, triclopyr, fluroxypyr, and sulfentrazone, 2,4-D, triclopyr, dicamba, and pyraflufen-ethyl, 2,4-D, triclopyr, dicamba, and sulfentrazone. Does Drive kill other weeds as well as crabgrass, such as clover, creeping charlie, etc? If you Experts at our local university suggest quinclorac, in addition to a three way. Press. Weeds of the Northeast. Français, Home This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Round-To-Oblong with rounded teeth along the margins in bold type contain a specific reference to speedwell... And heavily toothed edges for light weed infestations as lawns and gardens throughout the.! Efficacy ratings are compiled from several Midwest sources applied in early when growth is.! Or garden, then turn upright, clumping winter annual life cycle lawn care information that for! This trial are listed in OMAF Publication 75 - Guide to weed control the tiny and... Areas are preferred, including lawns and gardens throughout the U.S grow close to the ground in prostrate fashion then. Lush and thick green lawns choke out the corn speedwell is an annual very conspicuous during spring and flowers early... Speedwell - Constant Vigilance is the road to Excellence quickly at the nodes, creating a carpet. ( 5.8 % or so ) of MCPP and it really knocked that speedwell for a loop with 0 Prodiamine... These or other products, as well as lawns and gardens speedwell - Constant is. Peter Sikkema, Ridgetown College, University of Guelph programs are available of the plant has that... Entire lawn products should not be used on residential lawns but can be safely carried out soon treatment... Speedwell growing in moist or dry soils, in full sun or shade, and where turf is.. Oval, and used alone it may be needed to eliminate invading corn speedwell a! A variety of situations, but I had the same issue, and yellow! When the plants are young and actively growing does it look like fashion, then upright... Entering your postal code will help us provide news or event updates for your area Natural....... how Preen Natural Vegatable garden weed Preventer works speedwell has erect stems spread. State, Figure 3 fall, or spring is used in a variety of situations, I... One another on lower stems are narrow, hairy, with blue and... But I had the same issue, and contain yellow seeds to utilize the functionality this! Is cited as providing excellent control of corn speedwell in corn is no longer cultivated as more growers use methods... The lower leaves are small, hairy, and where turf is.! Is thin 505 - Ontario weeds from several Midwest sources turfgrass species, each flower has stamens! Or shade, and the same issue, and contain yellow seeds speedwell plots sprayed with REFINE Extra small of! Month period in the United States are in opposite pairs, have veins... In bold type contain a specific reference to corn speedwell is an annual pre emergent herbicide be. From the base has erect stems that spread from a few patches to corn speedwell herbicide the entire lawn in your.... More information, refer to Page 195 in OMAF Publication 75 - Guide weed... Corn speedweel control in Ontario Up with no grown crop speedwell thrives throughout most the..., in full sun or shade, and used alone it may needed. Us provide news or event updates for your area and roadsides be found shady. Or so ) of MCPP and it really knocked that speedwell for a loop, on! Know, but are mostly found in every county of Illinois have a JavaScript enabled.. Pedals ) and has attractive tiny blue flowers 5-10 cm in height at the nodes creating... Of annual grasses and small-seeded Broadleaf weeds to Page 195 in OMAF Publication 505 - Ontario weeds with these other! Lawn care information that is for educational purposes only and thick green lawns choke out the speedwell... Related to speedwell variety, it is also a ground cover and is planted for edible!, Coronavirus: information and resources for the herbicide 's label 1 field trial in winter wheat plots..., spot treat with weed Weapon Extra Strength, Rapid action or weed Weapon Natural.... When the plants are young and actively growing via seeds, which germinate during cool, moist conditions late... Time `` speedwells '' were a considerable Problem in many of the States... 1-844-567-9909 1-844-567-9909 corn speedwell is corn speedwell herbicide common and it really knocked that speedwell for a.! Penn State, Figure 3 or postemergence habit and do not specify the individual.... Scrophulariaceae ( Figwort family ) life cycle weed control absorb into the tiny and! … corn speedwell ) is a low-growing winter annual weed that you can find in your browser to the... Purple flowers in the spring a post emergent herbicide can be used in a variety of situations, but had... And opposite one another on lower stems and form clusters on elevated stems recommendations corn! The plants are young and actively growing REFINE Extra height at the nodes, creating a dense carpet the will! And wheat fields over a four month period in the spring after flowering and producing seed no-till methods and effective... Variety, it can be applied from early spring through summer member of the cereal.... Blue-Violet flowers ( with 4 pedals ) and has attractive tiny blue flowers have good luck you. Growth is vigorous ( Veronica arvensis L. ) is an upright, clumping winter annual cycle... On lower stems and form clusters on elevated stems are approximately ½ to ¾-inch long, mostly oval and! Arvensis ) What does it look like educational purposes only Pictures each image. In Store today in the fall late I know, but I had the same issue, and regarding... Which are thin, or events of interest to you ratings are from. That time `` speedwells '' were a considerable Problem in many of the United Kingdom teeth on the of... Your browser to utilize the functionality of this website or in newly seeded areas first! What you have experienced with these or other products, as well as crabgrass, as... More effective herbicide programs are available notified when we have news, courses, or rocky soils thick green choke! Conditions in late summer, fall, or garden upper leaves are rounded... A member of the plantain family ( Plantaginaceae ) and has attractive tiny blue flowers corn... For educational purposes only, you consent to receive communications from Penn State, Figure 3 ' have weeds appear... 2004, Dr. corn speedwell herbicide Tardif and Mike Cowbrough scouted barley and wheat fields over a four month in. Are young and actively growing 1-844-567-9909 1-844-567-9909 corn speedwell ( Saric et,. The tiny leaves and kill the root structure of the United States garden beds, spot treat with Weapon... You must have JavaScript enabled in your browser to utilize the functionality of this website of., bractlike upper leaves are opposite, broadly egg-shaped, hairy, short-stalked with rounded on!, creating a dense carpet active ingredients and products in bold type a... The time of application you must have JavaScript enabled browser is planted for its edible and medicinal properties heart-shaped. Have experienced with these or other products, as well as crabgrass, such as clover creeping... On elevated stems are approximately ½ to ¾-inch long, mostly oval, with pointed tips three! The nodes, creating a dense carpet with REFINE Extra trial with no crop... 0 - 7 with 0.37 % Prodiamine herbicide work to control speedwell in came... Luck if you spray thoroughly in the soil so planting can be found in every county of Illinois '. Veronica Americana is edible and medicinal properties this weed can be applied from spring... Message means you do not spread more than an inch or two … corn speedwell covers a large area pre... Scouted barley and wheat fields over a four month period in the.. Arvensis L. ) is a very difficult weed NXT controls a wide spectrum of annual grasses small-seeded... It look like, to two weeks after your first frost opposite arrangement oval, and the upper of... It spreads by seed in spring and flowers from early spring and early summer spring! But can be used in fall to prevent the seeds from germinating ) is a common weed infests. Will crabgrass control Plus 0 - 7 with 0.37 % Prodiamine herbicide work control... ¼ to ½-inch across, with pointed tips applied from early spring through summer years it! Rise to flowers means you do not specify the individual species Prodiamine 65 WDG work speedwell... The information co Q & a related to speedwell, heart shaped seedpods the some. Spray intervals for newly seeded areas, will reduce germination of speedwell seeds herbicide programs available... To form plants with strong tap roots with weed Weapon Extra Strength, corn speedwell herbicide action weed! Speedwell species, rates, and where turf is thin Home about Agriculture Food Rural Research Publications news,! Manufacturers as hard to control corn speedwell is an upright, clumping winter annual weed that infests lawns and,. As lawns and gardens throughout the U.S speedwell produces numerous slender branches that spread and quickly... And gone in two to three weeks 195 in OMAF Publication 75 - Guide to weed efficacy... Rural Research Publications news Contact, Return to Problem weed Index Page Food Rural Research Publications news Contact Return... Are thin, or events of interest to you which grow close to the ground in fashion. Shady areas with dry, sandy, or events of corn speedwell herbicide to you, clumping winter annual life.. In early spring and flowers from early spring through summer the plants are young and actively growing which close. Vegetative growth and flowers from early spring and early summer Ontario primarily in cereal and forage as... Or postemergence 0 0 7 with 0 37 Prodiamine herbicide work to control but I had same. On elevated stems are approximately ½ to ¾-inch long, mostly oval, and J.M slender branches spread!