what is this tall plant?

Asked August 1, 2016, 11:17 AM EDT

not something.i.planted and think this may have come from composted horse manure. it is extremely tall and has a long bamboo.like stalk. the leaves are opposite each.other.

Bath County Virginia

2 Responses

Please send a photo of the full plant.
Have you seen any flowers?

The best I can tell from this single leaf is that is plant may be Giant Ragweed.
Please send a photo of the full plant and I will confirm.