Field Bindweed
Convolvulus arvensis
Field Bindweed (Convolvulus arvensis) is a perennial broadleaf weed characterized by twining arrowhead-shaped leaves climbing grass blades; white to pink morning-glory funnel flowers; massive root depth.. It anchors via a deep fleshy taproot root system and is selectively controlled using Quinclorac or 2,4-D + Dicamba combination applied during fall application when flowering terminates and plants store sugars..
Quinclorac or 2,4-D + Dicamba combination
Twining arrowhead-shaped leaves climbing grass blades; white to pink morning-glory funnel flowers; massive root depth.
Always read and follow the manufacturer's EPA-approved pesticide product label. The label is the law under federal FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act) regulations. Application rates, personal protective equipment (PPE), target weed maturity stages, temperature restrictions, and grazing or re-entry intervals specified on the EPA container label supersede all online recommendations. Local state regulations may restrict certain active ingredients.
University-Verified Herbicide Formulations
Professional active formulations cross-referenced against university weed science trials.
Tenacity Herbicide (Mesotrione 8 oz)
Active: 40% Mesotrione Selective Systemic
Gold standard selective pre- and post-emergent targeting crabgrass, ground ivy, yellow nutsedge, and clover during overseeding.
SedgeHammer+ Turf Herbicide (Halosulfuron 0.5 oz)
Active: 5% Halosulfuron-methyl with Surfactant
Pre-mixed with surfactant for 1-gallon sprayers. Translocates into underground nutlets without injuring cool or warm season lawns.
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Botanical Identification Key for Field Bindweed
Accurately identifying Convolvulus arvensis is essential because spraying non-selective chemicals like glyphosate risks killing desirable lawn grass. Look for these botanical hallmarks:
- Foliar Morphology: Twining arrowhead-shaped leaves climbing grass blades; white to pink morning-glory funnel flowers; massive root depth..
- Root Architecture: Anchored by a deep fleshy taproot, making manual pulling ineffective unless the entire root crown is extracted.
- Growth Period: Active during perennial cycles, flourishing when lawn turf is stressed or cut too short.
Eradication Protocol & Selective Herbicide Selection
To eradicate Field Bindweed while preserving your lawn turfgrass, apply Quinclorac or 2,4-D + Dicamba combination during Fall application when flowering terminates and plants store sugars.. Ensure that the active ingredients match your host turfgrass tolerances:
- Temperature Safety Band: Apply when ambient air temperatures range between 65°F and 85°F. Never apply volatile ester herbicides in temperatures exceeding 85°F to prevent herbicide vapor drift and leaf burn.
- Adjuvant / Surfactant: For waxy or hairy weed foliage, mix with a methylated seed oil (MSO) or non-ionic surfactant according to EPA label instructions to enhance chemical cuticle penetration.
- Mowing Holdback: Do not mow the lawn 2 days prior to spraying or 2 days after application to maximize foliar surface area for chemical absorption.
Frequently Asked Questions About Field Bindweed
01 How do I kill Field Bindweed without harming my lawn?
Use a selective herbicide labeled for your specific turfgrass species containing Quinclorac or 2,4-D + Dicamba combination. Spray when Field Bindweed is actively growing during fall application when flowering terminates and plants store sugars.. Always check your host grass in our weed triage tool before application.
02 Why does pulling Field Bindweed by hand often fail?
Field Bindweed anchors via a deep fleshy taproot. Hand-pulling often breaks the crown or leaves underground root fragments, rhizomes, or nutlets behind, which triggers rapid regrowth. Systemic selective herbicides translocate down through the vascular tissue to destroy the entire root structure.
03 What class of weed is Field Bindweed?
Field Bindweed is classified botanically as a Broadleaf weed with a Perennial life cycle.
04 When is the best time of year to treat Field Bindweed?
The optimal eradication window is Fall application when flowering terminates and plants store sugars.. Applying when temperatures are between 60°F and 85°F ensures maximum chemical absorption and prevents foliar heat stress to your desirable lawn.