Poison-ivy
Toxicodendron radicans
Last reviewed: August 2026

Poison-ivy (Toxicodendron radicans) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org (opens in new tab), last reviewed 2026-05-21). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part sun
Water
medium
Size
12"–120" H × 24"–240" W
Bloom
May, Jun, Jul
Native to
AL, AR, AZ, CT and 42 more states
Pollinators
bees, beetles, flies
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 445 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Poison ivy is a native climbing or trailing vine that produces clusters of small greenish flowers followed by white berries. This highly allergenic plant causes severe skin reactions in most people and spreads aggressively through underground roots and bird-dispersed seeds.
In an HOA neighborhood
Poison-ivy takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.
- Causes severe allergic reactions in most people
- Considered a noxious weed requiring removal
- Liability concern for neighborhoods
Wildlife value
Host plant for eyed paectes moth, sumac leafblotch miner moth.
The flowers attract bees, beetles, and flies, while the berries provide food for over 60 bird species. Despite its wildlife benefits, the extreme human health risks make it unsuitable for residential landscapes.
Common questions
- How much sun does Poison-ivy need?
- Poison-ivy grows best in part sun conditions.
- When does Poison-ivy bloom?
- Poison-ivy blooms in May, June, and July.
- Where is Poison-ivy native?
- Poison-ivy (Toxicodendron radicans) is native to AL, AR, AZ, CT and 42 more states, per the World Checklist of Vascular Plants (Kew).
- Is Poison-ivy toxic to dogs?
- Poison-ivy is not on the ASPCA Animal Poison Control Center toxic plant list for dogs (aspca.org).
- Is Poison-ivy toxic to cats?
- Poison-ivy is not on the ASPCA Animal Poison Control Center toxic plant list for cats (aspca.org).
- What butterflies or moths does Poison-ivy host?
- Poison-ivy is a larval host plant for eyed paectes moth and sumac leafblotch miner moth.
- Is Poison-ivy HOA-friendly?
- Poison-ivy takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Poison-ivy? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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