Plant Care Western Poison Oak

Western Poison Oak

Also known as

Western poison-oak, Western poison-oak, Pacific poison oak and Western poison oak


Toxicodendron diversilobum

How to care for Western Poison Oak


How often to water your Western Poison Oak

Water needs for Western Poison Oak
0.5 cups
every 9

Western Poison Oak needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Western Poison Oak

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Western poison-oak in your home

Light needs and placement for plant Western Poison Oak: 3ft from a window
3ft or less from
a window

Western Poison Oak may have difficulty thriving, and will drop leaves 🍃, without ample sunlight.

Place it less than 3 feet from a south-facing window to maximize the potential for growth.

Select your region to see how the current weather in your area affects the placement of Western Poison Oak in your home 🏡.


How to fertilize Western Poison Oak

Nutrient, fertilizer, and repotting needs for Western Poison Oak: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Western Poison Oak after it doubles in size or once a year—whichever comes first.

Care Summary for Western Poison Oak

Western Poison Oak

Western Poison Oak

Greg recommends:


0.5 cups every 9 days


< 3ft from a window


Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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