What is this Wisconsin weed or plant?

kissproofgirlAugust 11, 2010

I thought I'd planted a dahlia where this huge plant started to grow. It has a very thick hollow stalk and is now 6 feet tall. I finally realized it's just a weed. But what weed? Thanks in advance to anyone who knows....

Thank you for reporting this comment. Undo
kissproofgirl

Here are additional pictures. Help!

    Bookmark   August 12, 2010 at 10:18AM
Thank you for reporting this comment. Undo
lamcon

Could it be a delphinium? The leaves look similar and they produce a long hollow stalk.

    Bookmark   August 13, 2010 at 5:53PM
Thank you for reporting this comment. Undo
pondwelr(z5 WI)

The leaf reminds me of wild lettuce or a bur plant of some sort. What is the infloresence at the tip? Maybe when it opens or blooms, you can better tell what it is. Pondy

    Bookmark   August 13, 2010 at 9:33PM
Thank you for reporting this comment. Undo
wirosarian_z4b_WI

giant ragweed---see link

Here is a link that might be useful: giant ragweed pics

    Bookmark   August 14, 2010 at 12:45AM
Thank you for reporting this comment. Undo
kissproofgirl

It was indeed giant ragweed--I got it out just before it seeded.

    Bookmark   August 15, 2010 at 11:34AM
Sign Up to comment
More Discussions
Powdery mildew
I had a question about the mildew, I've heard don't...
Tolimatoes
Artichokes in SE Wisco?
I like to try a "novelty crop" every year...
sprout.918
whats good seed for sweet corn
Last year I bought some corn seed, of course don't...
steelskies
Gardening Help For Wedding
Hello, I am looking for some help with choosing plants...
Hexan
wanted weeping willow tree cuttings
Does anyone have a tree that I can get some cuttings? I...
happytomato2008
© 2015 Houzz Inc. Houzz® The new way to design your home™