Other plants like poison oak and stinging nettle, a common herbal medicine that causes skin irritation when touched, may be irritating. Plants have evolved toxic compounds as protection against ...

• Poison oak, Toxicodendron diversilobum, with leaflets of three to five leaves, can be red, green or white. It is a deciduous native. • Stinging nettle, Urtica dioica, is a California native ...

A poison oak plant can have up to nine leaflets, although three leaflets are most common. The plants grow in sun and shade in mixed evergreen forests, woodlands, chaparral, and riparian areas.

Poison oak is a relative to poison ivy that contains the same oils and is extremely common in California. There are two types of poison oak plants, Pacific poison oak and Atlantic poison oak.

Poison oak is a relative to poison ivy that contains the same oils and is extremely common in California. There are two types of poison oak plants, Pacific poison oak and Atlantic poison oak.

Home remedies for poison ivy, oak, ... at Allergy Partners of the Central California Coast. learn more. Close. piola666 / Getty Images. Poison ivy, oak, and sumac are plants that can cause a ...

Poison oak is a relative to poison ivy that contains the same oils and is extremely common in California. There are two types of poison oak plants, Pacific poison oak and Atlantic poison oak.

More than 10 million people have reactions to poison oak and ivy each year. Despite its name, the plant is not toxic, explains Jeff Horwitz, who has suffered from itchy rashes on Northern California ...