--- title: Weed ID - Corn Speedwell description: As it warms up, some winter weeds may still be thriving. Here's how to identify corn speedwell as somewhat of a lesser known but just as troublesome weed. image: https://ewingirrigation-20200354.hs-sites.com/hubfs/ewing-irrigation-weed-identification-corn-speedwell.jpg --- ### Resources [![Ewing Outdoor Supply Logo V 4 Color](https://ewingirrigation-20200354.hs-sites.com/hubfs/Ewing%20Outdoor%20Supply%20Logo%20V%204%20Color.png) ](https://www.ewingoutdoorsupply.com/) [![Login/Register](https://no-cache.hubspot.com/cta/default/20200354/5d045e9a-574a-4a92-a8cc-1ce2a4352784.png)](https://cta-redirect.hubspot.com/cta/redirect/20200354/5d045e9a-574a-4a92-a8cc-1ce2a4352784) 0 You have no items in your shopping cart ### Shop Products Shop Products # Irrigation & Landscape supply Blog # Weed ID - Corn Speedwell [Kevin Lewis](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/author/kevin-lewis) on April 28, 2022 Share - [**](https://twitter.com/share?source=https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/weed-identification-corn-speedwell&text=Weed%20ID%20-%20Corn%20Speedwell%20-%20https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/weed-identification-corn-speedwell) - [** ](https://www.facebook.com/sharer/sharer.php?u=https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/weed-identification-corn-speedwell&title=Weed%20ID%20-%20Corn%20Speedwell&picture=https://20200354.fs1.hubspotusercontent-na1.net/hubfs/20200354/ewing-irrigation-weed-identification-corn-speedwell.jpg&description=As%20it%20warms%20up,%20some%20winter%20weeds%20may%20still%20be%20thriving.%20Here's%20how%20to%20identify%20corn%20speedwell%20as%20somewhat%20of%20a%20lesser%20known%20but%20just%20as%20troublesome%20weed.) - [**](http://www.linkedin.com/shareArticle?mini=true&url=https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/weed-identification-corn-speedwell&title=Weed%20ID%20-%20Corn%20Speedwell&summary=As%20it%20warms%20up,%20some%20winter%20weeds%20may%20still%20be%20thriving.%20Here's%20how%20to%20identify%20corn%20speedwell%20as%20somewhat%20of%20a%20lesser%20known%20but%20just%20as%20troublesome%20weed.) - [**](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/weed-identification-corn-speedwell) ![](https://ewingirrigation-20200354.hs-sites.com/hubfs/ewing-irrigation-weed-identification-corn-speedwell.jpg) Corn speedwell, or *Veronica arvensis*, is one of those smaller weeds that can become a big problem in short order. It is a winter annual so most likely it germinated last fall or in very early winter, and is just visible now. It also comes with several lookalikes, including ivyleaf and Persian speedwell, and on first glance, could even be confused with mouseear chickweed. Corn speedwell has more serration of the leaf margins than that of ivyleaf and is covered in fine hairs, whereas Persian speedwell is glabrous or without hairs. As corn speedwell matures, leaves will tend to be longer and narrower with a smoother margin. Mouseear chickweed will have hairs on the upper leaf surface and midvein of the underside, however the leaf margin is entire, or without serration. The final identifier is mouseear chickweed will have white flowers, and the speedwell will have a pale bluish to a light purple flower. ![ewing-irrigation-weed-identification-corn-speedwell-chickweed](https://ewingirrigation-20200354.hs-sites.com/hs-fs/hubfs/ewing-irrigation-weed-identification-corn-speedwell-chickweed.jpg?width=424&name=ewing-irrigation-weed-identification-corn-speedwell-chickweed.jpg) Preventative measures are best when applied in the late summer to early fall, and most conventional pre-emergent herbicides perform very well. Most traditional post-emergent herbicides will get good to excellent control, but this weed can be a little tricky. First, because of the tiny leaf surface, excellent coverage of sprays is required. Second, due to the pubescent or hairy leaf surface, herbicides applied without surfactants may not get sufficient leaf surface contact for outstanding control. Lastly, weed and feed granular materials should not be considered an option because leaf contact would be difficult at best. Non-selectives in beds are the best option when you see these weeds springing up. Please contact the [Ewing Technical Services Team ](tel:480-669-8791)with questions and for help with weed identification. TAGS: [Pre-Emergent Herbicide](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/pre-emergent-herbicide), [Weed Control](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/weed-control), [Killing Weeds](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/killing-weeds), [Maintaining Turf](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/maintaining-turf), [Turf Management](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/turf-management) ### Looking for More? ### Topics - [Turf Management (55)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/turf-management) - [Maintaining Turf (42)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/maintaining-turf) - [turf solutions (31)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/turf-solutions) - [turf tips (24)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/turf-tips) - [Weed Control (18)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/weed-control) - [Killing Weeds (16)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/killing-weeds) - [Pest Control (11)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/pest-control) - [Pre-Emergent Herbicide (11)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/pre-emergent-herbicide) - [turf maintenance (10)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/turf-maintenance) - [Drought (5)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/drought) - [Drought Stress (5)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/drought-stress) - [Pests (5)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/pests) - [Turf Damage (5)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/turf-damage) - [Business Practices (4)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/business-practices) - [Fertilizer (4)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/fertilizer) - [plant care (4)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/plant-care) - [EMPRO (3)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/empro) - [Fall Turf Renovation (3)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/fall-turf-renovation) - [Landscape Services (3)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/landscape-services) - [Post-Emergent Herbicide (3)](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tag/post-emergent-herbicide) ## Related [ Managing Localized Dry Spot with Smarter Moisture Solutions ](https://ewingirrigation-20200354.hs-sites.com/managing-localized-dry-spot-with-smarter-moisturesolutions) By [Kevin Lewis](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/author/kevin-lewis) On July 7, 2026 [ Managing Sports Fields with Smart Irrigation Technology ](https://ewingirrigation-20200354.hs-sites.com/managing-sports-fields-with-smart-irrigation-technology) By [Ian Yarian](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/author/ian-yarian) On July 2, 2026 [ Smart Irrigation Starts with the Controller ](https://ewingirrigation-20200354.hs-sites.com/smart-irrigation-starts-with-the-controller) By [Greg Williams](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/author/greg-williams) On June 30, 2026 ## Related ## [Tools for Battling Landscape Bed Weeds: Over-The-Top Herbicides](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/tools-for-battling-landscape-bed-weeds-over-the-top-herbicides) By [Kevin Lewis](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/author/kevin-lewis) On September 21, 2023 ## [Weed ID - Spotted Spurge](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/weed-identification-spotted-spurge) By [Kevin Lewis](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/author/kevin-lewis) On September 14, 2022 ## [Weed ID - Goosegrass](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/weed-identification-goosegrass) By [Kevin Lewis](https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/author/kevin-lewis) On August 31, 2022 ### Subscribe via Email Enter your email to get special offers, exclusive discounts, and more! [![Subscribe](https://no-cache.hubspot.com/cta/default/20200354/88ccb08c-3300-4e9a-b7b8-69d093daaa55.png)](https://cta-redirect.hubspot.com/cta/redirect/20200354/88ccb08c-3300-4e9a-b7b8-69d093daaa55) ### Company ### Resources ### Help ### Sign up for our Newsletter Enter your email to get special offers, exclusive discounts, and more! [![Sign up](https://no-cache.hubspot.com/cta/default/20200354/c28dc24c-bf78-40c0-817f-c1e966c7b2b9.png)](https://cta-redirect.hubspot.com/cta/redirect/20200354/c28dc24c-bf78-40c0-817f-c1e966c7b2b9) - [**](https://www.facebook.com/EwingOutdoorSupply) - [**](https://twitter.com/EwingOutdoor) - [**](https://www.instagram.com/ewingoutdoor/) - [**](https://www.linkedin.com/company/ewingoutdoorsupply/) - [**](https://www.youtube.com/@ewingoutdoorsupply) © 2025 - Ewing Irrigation Products, Inc. All Rights Reserved. ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Kevin Lewis", "url" : "https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/author/kevin-lewis" }, "dateModified" : "2022-09-20T21:14:52.752Z", "datePublished" : "2022-04-28T21:14:00.000Z", "headline" : "Weed ID - Corn Speedwell", "image" : [ "https://ewingirrigation-20200354.hs-sites.com/hubfs/ewing-irrigation-weed-identification-corn-speedwell.jpg" ], "mainEntityOfPage" : { "@id" : "https://ewingirrigation-20200354.hs-sites.com/turf-and-ornamental-tech-tips/weed-identification-corn-speedwell", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://ewingirrigation-20200354.hs-sites.com/hubfs/Ewing%20Outdoor%20Supply%20Logo%20V%204%20Color-1.png" }, "name" : "Ewing Outdoor Supply" } } ```