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What is This Plant? Giant Ragweed

Category Weeds
This North American annual from the sunflower family, is considered a noxious weed and an allergen. This is a guide about what is this plant? (giant ragweed).
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Ask a QuestionHere are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community or ask a new question.

By 1 found this helpful
July 29, 2011

This thing just keeps getting bigger and bigger. It is now almost 5 feet tall. It looks like it will bloom or something, but then just keeps sending out more leaves in the place where it seems a bud ought to be forming.

My husband said it looks like a pot plant, but I'm pretty sure it's not. We've all seen plenty of photos of those things. (And a few people have seen the real thing!) This was not in my garden last year. And I know I didn't plant it this year, it just showed up, so I decided to see what it would turn out to be.

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The suspense is killing me.

I'm sure when it blooms it will be easy to ID, but so far, nothing. The close-up photo is looking down on the place where it seems a bud should be. Photo was taken a couple weeks ago.

Can someone help?

By ~gloria

Editor's Note: Gloria has since found out that this plant is Giant Ragweed (Ambrosia trifica). Here is a link to the follow up post:

Answers

August 3, 20110 found this helpful
Best Answer

Can't tell for sure from your picture but look up Giant hogweed.

en.wikipedia.org/.../Giant_Hogweed

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If it is this be careful the sap of leaves is dangerous.

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By 4 found this helpful
August 19, 2011

Not long ago, I asked the ThriftyFun community to help me identify this strange, rapidly-growing plant that mysteriously appeared in my perennial garden. I received replies ranging from wild lettuce to hog weed, but none were correct.

Finally, a botany professor from SUNY Geneseo, NY, came up with the correct I.D. Giant ragweed! Ambrosia trifica, to be specific. As of clip time, it had reached 6 1/2 feet tall. He also told me I'd better get rid of it, post haste, before it had a chance to spread it's nasty pollen all over the neighborhood. Which I did.

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Thought you'd like to know the "rest of the story."

By ~gloria

Giant Rag Weed in Garden

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