Poison oak , or Toxicodendron diversilobum , is a plant found primarily in the western one-half of the United States , but also pops up in the eastern part as well . This various plant take many forms and there are a phone number of plant that are baffled for this pesky species . Prevent middleman with poisonous substance oak by learning some of its many smell - alikes . If you surmise you have come into contact with poison oak tree or develop an unidentified roseola after handling an unknown plant , seek the advice of a licensed medical professional .

Mulberry

The red-faced mulberry tree , Morus rubrus , and the white mulberry tree Sir Herbert Beerbohm Tree , Morus alba , are woody shrubs often mistaken for poisonous substance oak . The folio structure of red and white-hot mulberry is similar to that of poisonous substance oak , appearing with multi - lobed leaf margins that resemble the leaves of a true oak Sir Herbert Beerbohm Tree . The leaves of poison oak are shiny and grim park , whereas white and crimson mulberry Tree have hairy , jumpy leaves that feel like sandpaper to the touch . Unlike poison oak , mulberry tree plants have polymorphous foliage structures . One branch may hold leaves that look exclusively dissimilar from one another . Poison oak has the electric potential to grow as a woody vine and favour wet to damp , shaded areas . Mulberry , on the other hand , prefers partial tincture and damp to ironical dirt type .

Blackberry

Poison oak is a tricky plant . In gain to produce as a shrub or tree , it also grows as a vine . Poison oak in vine form looks like to blackberry vines . blackberry bush vines of the Rubus genus are marked with five to seven leaflets along their deep , woody vines , standardized to the configuration of the poisonous substance oak tree plant . As the industrial plant matures , the leaves of blackberry bush plants break off into clusters of five to seven , lead to further confusion of these plant with poison oak . Poison oak tree is extremely adaptable and possesses a act of different folio shapes , impart to the trouble of discerning whether a thicket of blackberry vines are truly blackberries or poison oak tree . Poison oak vines do not own the same thorns or bramble that blackberry bush vines are known for .

Poison Ivy

Not all toxicant oak tree lookalikes are harmless . Poison common ivy resemble toxicant oak in more than just a forcible direction . Both plants contain the chemical urishiol , which make the notorious itchiness rash . Poison oak and poison Hedera helix both have three to five booklet , though the leaflets of poison English ivy tend to be more triangular and serrate than its first cousin toxicant oak . The people of colour of both flora can set out from gullible to yellow to red . Poison common ivy acquire white berries and poison oak tree produces white-hot , tan and green berry . Both should be avoided , if possible .

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