Western Poison Oak (Toxicodendron Diversilobum) is a perennial shrub in the Anacardiaceae family with easy care difficulty. It requires low watering and full sun or partial shade or full shade light in USDA hardiness zones 4-10. This plant is toxic to cats and dogs — keep it out of reach of pets.

A highly variable shrub or vine native to western North America, famous for causing severe allergic reactions.

Western Poison Oak

Western Poison Oak

Toxicodendron Diversilobum

A highly variable shrub or vine native to western North America, famous for causing severe allergic reactions.

Quick Facts

Type
shrub
Lifecycle
perennial
Care Difficulty
Easy
Water Needs
Low
Light
Full Sun, Partial Shade, Full Shade
Hardiness Zones
4-10

Safety

⚠️
Not Pet Safe
⚠️
Not Child Safe
☠️
Toxic

Growing Conditions

Soil Types:clay, sandy, loamy, rocky
Indoor:No
Outdoor:Yes
Garden Use:erosion control

Care Calendar

Monthly care tasks for Western Poison Oak

Jan
Prune
Feb
Fertilize
Mar
Repot
Apr
Water+
May
...
Jun
...
Jul
...
Aug
...
Sep
...
Oct
...
Nov
...
Dec
...

Expert Care Tips

Pro tips from botanists and plant experts

Watering Tip

Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.

Humidity Trick

Group plants together to create...

Growth Hack

Rotate your plant every...

Photo Gallery10+ photos

Western Poison Oak
Western Poison Oak detail

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Taxonomy

Family:Anacardiaceae
Genus:Toxicodendron