There are a number of plants to avoid in Delaware. Here's how to identify the big three – poison ivy, oak and sumac.

A poison sumac rash is usually accompanied by redness, swelling, blisters, and an intense itch. After you come in contact with poison sumac, you need to clean the area with soap and water.

Poison ivy, poison oak, and poison sumac are three plants notorious for causing itchy, uncomfortable rashes that can turn a pleasant outdoor experience into a nightmare.

It's particularly dangerous because its sap contains urushiol, a toxic oil that can cause painful rashes, blisters, and ...

Poison oak rash is an allergic reaction to the leaves ... Like poison ivy and poison sumac, poison oak releases an oil called urushiol when it sustains damage. Your skin absorbs this allergen ...

and poison sumac are three of the most common causes of allergic contact dermatitis in the U.S. They all contain an oil called urushiol, which triggers an allergic reaction, usually an itchy rash.

The rash is an allergic reaction to urushiol oil, which is present in poison ivy, oak, and sumac sap. Poison ivy rashes are one of the most common types of allergic contact dermatitis ...

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If you've never received a rash from poison oak, ivy or sumac, the rash could last 21 days or longer. If you have had the rash previously, it will last one to 14 days.