quot;Leaves of three, let it be" is a good rule of thumb, but knowing more about poison ivy may help you avoid an itchy rash.
How to Get Rid of Poison Ivy in Your Yard
Poison ivy - Wikipedia
33 Best Poison Ivy, Oak, Sumac ideas
Healthy Me PA - Leaves of three, let it be? That may be the case for poison ivy and poison oak, but not all plants have this feature—including poison sumac. To avoid
Leaves of three? Let it be.” - Missouri Poison Center
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What can I do to get rid of the poison ivy in my yard?
Leaves of three, let it be
Avoid Poison Ivy, Poison Oak, and Poison Sumac - NWF