Itchy Leaves You Should Avoid Touching

Sept16,2025

Contains urushiol oil that causes severe itching and blisters.

Poison Ivy 

Similar to poison ivy; its leaves can trigger painful rashes.

Poison Oak 

Toxic oils from its leaves cause intense skin irritation.

Poison Sumac

Covered with fine hairs that inject formic acid, causing burning and itching.

Stinging Nettle 

Sap from its leaves can cause rashes, blistering, and even long-term skin sensitivity.

Giant Hogweed 

Leaves can irritate skin and are highly toxic if ingested.

Poison Hemlock

Leaf sap reacts with sunlight, leading to itchy, blistered skin.

Cow Parsnip

Extremely poisonous; contact can cause painful blisters.

Manchineel Tree Leaves