herbicides and poison ivy
Thanks for writing. It's best to completely wet the poison ivy leaves with Roundup or another herbicide so it's well-absorbed by the plant.
Many gardeners create a "shield" of cardboard, plastic, or another material to protect desirable plants that are growing nearby the weeds. Just set your shield up between the poison ivy and your perennials and they should be safe.
---Justin, Senior Garden Editor, BHG.com
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