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Identify This Plant - Ambrosia trifida, giant ragweed

 
pollinator
Posts: 442
Location: Pennsylvania Pocono Mt Neutral-Acidic Elv1024ft AYR41in Zone 5b
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Hi All! Could someone please help me identify this plant? I've never seen this plant before in my garden. It's only in one small area. It is possible I planted this from seed in spring. I collect seeds from around the world, so I'm thinking it could be an exotic. Just can't remember. It stands about 7 feet tall, has single and multi lobed leaves, the seed or soon to be flowers smell like lemon. It's covered in black ants, but I don't see any sign of aphid herding. Any suggestions would be appreciated. Thanks
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Posts: 319
Location: (Zone 7-8/Elv. 350) Powhatan, VA (Sloped Forests & Meadow)
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I believe it is Ambrosia trifida aka giant ragweed.
 
Rick Roman
pollinator
Posts: 442
Location: Pennsylvania Pocono Mt Neutral-Acidic Elv1024ft AYR41in Zone 5b
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Cortland, Thank you. That's what it is. With your help ... I found the original seed package. I think this was an added freebie from an over seas seed purchase many years ago. Most likely for medicinal purposes. I've been pulling common ragweed, (which showed up this year) all season. I think I will save some seed, maybe make a tincture. I'm obviously not allergic to it since I've been crushing it and sniffing it. But, before it drops its seed, I'm gonna pull it all. If it's as prolific as the common ragweed... its gotta go. Thanks again for your help.
 
Cortland Satsuma
Posts: 319
Location: (Zone 7-8/Elv. 350) Powhatan, VA (Sloped Forests & Meadow)
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Rick,

Your welcome! I am allergic to rag weeds, so I do have a keen eye for it!
 
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