Finding an effective herbicide for poison ivy involves balancing fast results, root-level kill, and safety for your lawn or garden. The following selections are well-regarded for targeting poison ivy and other tough brush while offering different formats and timing. This guide compares ready-to-use sprays, concentrates, and formulators designed to kill poison ivy at the roots and prevent regrowth.
| Product | Brand | Format | Key Benefit |
|---|---|---|---|
| Ortho GroundClear Poison Ivy & Tough Brush Killer3 | Ortho | Ready-to-Use Spray | Fastacting, visible results in 1 hour; systemic kill to the root |
| Bonide Poison Oak & Ivy Killer | Bonide | Ready-to-Use Spray | Kills roots; rainproof within 6 hours |
| Bonide 332 Herbicide Poison Ivy & Brush Killer | Bonide | Concentrate | Kills a wide range of brush and weeds; can treat stumps |
| BioAdvanced Brush Killer Plus | BioAdvanced | Concentrate | Penetrating formula targets poison ivy and roots |
| Roundup Poison Ivy Plus Tough Brush Killer₂ (Concentrate) | Roundup | Concentrate | Visible results in hours; broad weed compatibility |
Ortho GroundClear Poison Ivy & Tough Brush Killer3
Ortho GroundClear Poison Ivy & Tough Brush Killer3 is a ready-to-use spray designed to tackle poison ivy, poison oak, and other tough weeds. The product provides systemic action, delivering kill down to the root. It offers fast results, with visible changes typically observed within an hour. The Comfort Wand applicator helps target brush and woody weeds with minimal drift, making it suitable for yard edges and along fences. The formula is formulated for broad weed control and can be used in homes, landscapes, and lightly wooded areas.
Bonide Poison Oak & Ivy Killer
Bonide Poison Oak & Ivy Killer is a ready-to-use spray option designed for home gardens and lawns. It starts working overnight and kills the entire plant down to the root. The formulation is rainproof within six hours of application, helping to protect the treated area from light rain after application. It’s designed to control poison ivy and poison oak while remaining safe for surrounding lawn grasses when used as directed. This product is convenient for homeowners who want quick, simple weed control without mixing concentrates.
Bonide 332 Herbicide Poison Ivy & Brush Killer
Bonide 332 is a concentrate that targets a broad spectrum of brush and woody weeds, including poison ivy, poison oak, kudzu, and wild blackberries, among others. It can also be used for stump treatment—apply undiluted to freshly cut stumps for effective control. The product is designed to be safe for lawns when applied as directed, actively killing both above-ground growth and the root system. This option suits those who prefer a concentrated solution with flexible application.
BioAdvanced Brush Killer Plus
BioAdvanced Brush Killer Plus is a concentrate designed to kill poison ivy, poison oak, blackberry, and other stubborn weeds. Its penetrating formula targets root systems and deep-set growth, aiding in long-term control. Users can expect visible results within one to six weeks, depending on weather, moisture, and the weed’s maturity. This option is suitable for larger infestations or landscapes where a concentrated measure is preferred for thorough eradication.
Pro Brush & Poison Ivy Killer – 32oz (Liquid Harvest)
Pro Brush & Poison Ivy Killer is a concentrated post-emergent herbicide designed for woody plants, brush, and broadleaf weeds. It uses a dual active ingredient mix (triclopyr and 2,4-D) to provide effective control in both cool and warm weather. The formula supports flexible timing, allowing in-season or dormant-season applications. It is suitable for managing tough brush in larger outdoor spaces and can be used where selective control is needed without harming nearby grasses when applied as directed.
Ortho GroundClear Poison Ivy & Tough Brush Killer1
Ortho GroundClear Poison Ivy & Tough Brush Killer1 is a concentrate that controls more than 60 listed weeds and brush, including poison ivy and poison oak. The product moves through the plant via leaves and is visible as wilting or yellowing within two to six weeks. It is rainproof within two hours, ensuring effective control even in variable weather. This option appeals to users who prefer a concentrated formulation with strong systemic action and broad coverage for established infestations.
Roundup Poison Ivy Plus Tough Brush Killer₂ (Concentrate)
Roundup Poison Ivy Plus Tough Brush Killer₂ Concentrate is formulated to kill poison ivy, poison oak, poison sumac, wild blackberry, and other tough weeds. It offers rain resistance and rapid action, with visible results within hours. This concentrate is suitable for larger infestations or landscapes where strong, economical weed control is required and can be mixed for bulk coverage as directed by the product label.
Roundup Poison Ivy Plus Tough Brush Killer₂ with Comfort Wand
Roundup Poison Ivy Plus Tough Brush Killer₂ with Comfort Wand combines the same active formula with a Comfort Wand applicator for precise spraying. The product provides rainproof performance in about 30 minutes and shows visible results within hours. It is suitable for spot treatments in lawns, gardens, and landscapes where quick, targeted control is required and planting can resume after a short wait, following label directions.
Buying Guide: Key Purchase Considerations
When selecting a poison ivy herbicide, consider the following factors to ensure effective, safe results for your landscape:
- Formulation: Choose ready-to-use sprays for small-to-moderate infestations or concentrates for larger areas. Concentrates allow bulk coverage but require mixing and precise dilution.
- Active ingredients: Common solutions include triclopyr, 2,4-D, and glyphosate-based blends. Some formulations target just brush, while others provide broader weed control.
- Root-level kill vs. surface control: Look for products described as systemic or penetrating, which kill the weed down to the root for long-term control.
- Application timing: Some formulations work quickly (hours), while others show results over days to weeks. Timing may depend on weather and plant growth stage.
- Lawn and landscape safety: Check whether the product is labeled safe for grasses and ornamentals, and follow label directions to avoid damage to desirable plants.
- Weather considerations: Rainfast or rainproof times affect effectiveness. Plan applications during appropriate conditions as specified on labels.
- Stump treatment capability: If you are removing cut stumps, some products offer stump-killing capabilities for more thorough control.
- Environmental impact and safety: Always follow safety precautions, protective gear recommendations, and storage guidelines per the label.
- Cost per acre or per treated area: Consider how much product you need for your space and compare long-term value, not just upfront price.