Combat poison ivy and tough brush effectively with proven weed killers that target roots and invade the plant’s system. This guide reviews five highly rated products designed to kill poison ivy and other invasive brush, while explaining how to choose the right formula for your yard or property. Learn about readiness, coverage, rain resistance, and timing to maximize results and minimize reapplication.
Summary of selected products:
- Ortho GroundClear Poison Ivy & Tough Brush Killer3 — Ready-To-Use, 1 gal
- Roundup Poison Ivy Plus Tough Brush Killer₂ Concentrate — 32 oz
- Roundup Poison Ivy Plus Tough Brush Killer₂ with Comfort Wand — 1 gal
- BioAdvanced Brush Killer Plus — Concentrate, 32 oz
- BioAdvanced Brush Killer Plus — Ready-to-Use, 1 Gal
Ortho GroundClear Ready-To-Use Poison Ivy & Tough Brush Killer
Ortho GroundClear Poison Ivy & Tough Brush Killer3 is a ready-to-use weed killer that controls over 60 listed tough weeds and brush, including poison ivy, poison oak, kudzu, and wild blackberry. Its fast-acting formula starts working within an hour and provides systemic action that kills weeds down to the root. This product is designed for convenient application without mixing and is rainfast after a short period, making it suitable for quick yard missions or larger property spots.
Roundup Poison Ivy Plus Tough Brush Killer₂ Concentrate
Roundup Poison Ivy Plus Tough Brush Killer₂ Concentrate is an exclusive formula that targets poison ivy, poison oak, poison sumac, wild blackberry, kudzu, and other tough weeds. It becomes rainproof in as fast as 30 minutes and shows visible results in hours. The concentrate option allows for flexible mixing and can enable planting restrictions for 1 to 30 days after application depending on the garden plan and booklet guidance.
Roundup Poison Ivy Plus Tough Brush Killer₂ With Comfort Wand
Roundup Poison Ivy Plus Tough Brush Killer₂ with Comfort Wand is an exclusive formula designed to kill poison ivy, poison oak, poison sumac, wild blackberry, and tough weeds. It offers rainproof performance in about 30 minutes and produces visible results within hours. Like the concentrate version, it allows for planting 1 to 30 days after application, with user guidance in the included booklet for best results.
BioAdvanced Brush Killer Plus — Concentrate, 32 oz
BioAdvanced Brush Killer Plus is a concentrate that targets poison ivy, poison oak, and blackberry, along with over 75 other weeds. Its special penetrating formula aims to reach root systems, delivering sustained control. Visual results typically appear within 1 to 6 weeks, offering a longer window before evaluating effectiveness compared with fast-acting sprays.
BioAdvanced Brush Killer Plus — Ready-to-Spray, 32 oz
BioAdvanced Brush Killer Plus Ready-to-Spray is a convenient spray that kills poison ivy, poison oak, blackberry, and other listed weeds. It kills tough brush by targeting roots and vines with a formulation designed for easy handheld spraying. Expect visual progress in 1 to 6 weeks, depending on weather and application conditions, with annual or seasonal re-treatment as needed.
Ortho GroundClear Poison Ivy & Tough Brush Killer1 — Concentrate
Ortho GroundClear Poison Ivy and Tough Brush Killer1 is a concentrate that controls over 60 listed weeds and brush, including poison ivy and oak, kudzu, and wild blackberry. It enters through leaves, moves systemically, and wilting or yellowing typically occurs in 2 to 6 weeks. The product is rainproof in about 2 hours, contributing to flexible scheduling after application.
Pro Brush & Poison Ivy Killer — 32oz
Pro Brush & Poison Ivy Killer by Liquid Harvest is a concentrated post-emergent herbicide designed to control woody plants, brush, and broadleaf weeds, including poison ivy. It combines dual active ingredients for effective control across cool and warm seasons, offering flexible application timing during in-season or dormant periods. This product is positioned for those dealing with dense brush growth alongside poison ivy clusters.
Buying Guide
- Active ingredients and spectrum: Look for formulations that target poison ivy and common companion weeds. Concentrates typically offer broader coverage, while ready-to-use products provide quick results with less effort.
- Time to visible results: Some products show results in hours or days, others in 1–6 weeks. Choose based on how urgently you need brush control and your tolerance for slower progress.
- Root and systemic action: For deep-rooted vines, select products noted to move through the plant and kill roots to prevent regrowth.
- Rainfast and weather considerations: Rain resistance timing affects scheduling. If you expect rain shortly after application, pick a rainfast option to minimize wash-off.
- Application method: Ready-to-use sprays are convenient for small patches, while concentrates suit larger YARD jobs or property lines. Comfort Wand or spray wands can improve ease of use and precision.
- Planting restrictions: Some products allow planting or seeding after a specified interval post-application. Review the product booklet for timing and safety guidelines before landscaping or gardening plans.
- Safety and environment: Follow label directions for protective gear, avoid drift to desirable plants, and consider environmental impact on nearby wildlife and water sources.
- Cost and coverage: Compare coverage per gallon or per bottle to assess value, especially for larger properties or frequent use across seasons.