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A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

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Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

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Sunday - September 16, 2012

From: Portland, OR
Region: Northwest
Topic: Herbs/Forbs
Title: Nativity of Bidens frondosa from Portland OR
Answered by: Barbara Medford

QUESTION:

Is Bidens frondosa (Beggar's Tick) native to North America or is it introduced? If introduced, is it considered invasive?

ANSWER:

According to his USDA Plant Profile Map, Bidens frondosa (Devil's beggartick) is indeed native to North America, and to Multnomah County OR.

As to its invasiveness, here are comments we found on it:

From Illinois Wildflowers: "This plant is easy to grow, and can become a weedy pest."

FromWikibooks: "The sticky seeds make this plant a nuisance for pet and livestock owners, and it is generally seen as a weed."

Summary: Bidens frondosa (Devil's beggartick) is native to North America; we found no reference to its being invasive but it was widely described as a weed. You must draw your own conlusions on that.

 

From the Image Gallery


Devil's beggartick
Bidens frondosa

Devil's beggartick
Bidens frondosa

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