How to be Safe When You Encounter Poison Oak

Poison Oak (Toxicodendron Diversilobum)

One plant you may have noticed at Tilden Park is the one below. Some people can be very allergic to this plant, while others will completely ignore it. Since there is a possible risk, I have chosen to include this blog post about it.

Known commonly as Pacific Poison Oak, it has become particularly prolific in the East Bay. Use caution and avoid touching it when hiking in Tilden Park, which has been referenced in previous Hike of the Week post on September 1 to Inspiration Point, as well as September 15 to Wildcat Peak.

Poison Oak is a vine with red and green leaves arranged in usually three, but up to nine, round and scalloped leaflets. The vine usually grows less than 30 feet [Wikipedia].

Tips to be Safe:
  1. Be careful not to touch this plant, as it emits a chemical called urushiol that causes an allergic reaction in humans. A rash will develop within 48-72 hours of exposure.
  2. Instead, wear long pants and sleeves and avoid letting the leaves touch your face.
  3. Do not burn Poison Oak since it will get into the air, and the rash is worse if it reaches the eyes.
  4. According to WebMD, the rash can be serious enough to require a doctor’s attention. If the rash reaches near your eyes or if it spreads all over the body, you should see a doctor. If you have a more serious reaction, consider emergency services. Please consult WebMD for more information.

As always, stay safe and enjoy the outdoors.


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